Tüm alıştırma soruları

2195 soru

Soru 1941Soru

An eco-friendly power facility generates electricity exclusively using solar panels and wind turbines. Last month, energy from solar panels was produced at a constant cost of 0.04perkilowatthour(kWh),andenergyfromwindturbineswasproducedataconstantcostof0.04 per kilowatt-hour (kWh), and energy from wind turbines was produced at a constant cost of 0.06 per kWh. What was the average cost per kWh of the total energy generated by the facility last month?

(1) Last month, the facility generated 300,000 kWh of energy using solar panels.
(2) Last month, the ratio of the energy generated by wind turbines to the energy generated by solar panels was 2 to 3.

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Cevap: Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

Cevap

Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
The question asks for the weighted average cost per kWh of electricity produced by two sources with given unit costs (0.04and0.04 and 0.06). A weighted average of two component rates depends solely on the ratio of the quantities involved, not on the total absolute quantities. Statement (1) gives only the quantity of solar energy without providing any information about wind energy, making it insufficient. Statement (2) gives the exact ratio of wind energy to solar energy (2:32:3), which allows us to find the exact weighted average cost ($0.048 per kWh) without knowing the total energy produced. Therefore, Statement (2) alone is sufficient.

Adım Adım Çözüm

1
Rephrase the question stem target using weighted averages.
Let SS be the kWh generated from solar panels and WW be the kWh generated from wind turbines. The average cost per kWh is given by 0.04S+0.06WS+W=0.04(SS+W)+0.06(WS+W)\frac{0.04S + 0.06W}{S + W} = 0.04\left(\frac{S}{S+W}\right) + 0.06\left(\frac{W}{S+W}\right).
Simplifying the formula shows that the average cost depends strictly on the relative ratio of WW to SS (or the proportion of each source to the total), rather than absolute kWh quantities.
2
Evaluate Statement (1): Last month, the facility generated 300,000 kWh of energy using solar panels.
S=300,000S = 300,000, but WW is unknown.
Since the amount of wind energy WW is completely unknown, we cannot calculate the weighted average cost. Statement (1) is NOT sufficient.
3
Evaluate Statement (2): The ratio of energy generated by wind turbines to solar panels was 2 to 3.
WS=23W=23S\frac{W}{S} = \frac{2}{3} \Rightarrow W = \frac{2}{3}S. Substituting into the average cost expression yields 0.04S+0.06(23S)S+23S=0.04S+0.04S53S=0.085/3=$0.048\frac{0.04S + 0.06(\frac{2}{3}S)}{S + \frac{2}{3}S} = \frac{0.04S + 0.04S}{\frac{5}{3}S} = \frac{0.08}{5/3} = \$0.048 per kWh.
Because SS cancels out completely, knowing only the ratio gives a unique numerical value for the average cost per kWh. Statement (2) is ALONE sufficient.

Anahtar Kavram

Weighted Average Ratios in Data Sufficiency
Soru 1942Soru

For over half a century, historical sociolinguists evaluating early modern English print culture maintained that the rapid standardization of English orthography between 1500 and 1650 was almost exclusively driven by printing house compositors seeking mechanical efficiency. According to this traditional view, individual printers imposed uniform spelling conventions to streamline metal typesetting, paying little heed to regional dialectal variations or emerging orthoepic theories proposed by contemporary grammarians.

However, recent archival analyses of regional probate records and personal correspondence suggest that this compositor-centric narrative oversimplifies a complex socio-literary shift. While early printers undoubtedly preferred standardized forms for commercial expediency, their choices were far from arbitrary or isolated. Printers frequently adopted spelling variations that reflected broader orthographic shifts already taking hold among educated merchant classes. Furthermore, orthographic reform treatises by prominent sixteenth-century educators, long dismissed by economic historians as pedantic vanity projects, demonstrate a measurable alignment with the specific conventions that printers eventually codified.

This does not mean that printers surrendered their commercial prerogatives to academic theorists. Rather, the standardization of early modern English spelling is best understood as a reciprocal synthesis: compositors mediated between the commercial pressures of bulk production and the evolving linguistic prestige of urban literate networks. By viewing printers not as autonomous despots of the page but as responsive actors within a wider textual marketplace, scholars can better appreciate the dynamic interplay between economic motivation and cultural prestige in shaping modern written language.

Which of the following best characterizes the author's stance toward the traditional view regarding the standardization of early modern English orthography?

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Cevap: Measured skepticism, acknowledging the influence of commercial motives while arguing that the traditional model oversimplifies the standardization process.

Cevap

The author maintains a stance of measured skepticism toward the traditional view, conceding that printers sought commercial efficiency while arguing that the traditional narrative oversimplifies the broader socio-literary synthesis.
The passage explicitly concedes in paragraph 2 that printers were motivated by commercial expediency, but directly criticizes the traditional view for oversimplifying a complex socio-literary shift. In paragraph 3, the author proposes a nuanced synthesis. Thus, the author's attitude is best described as measured skepticism—acknowledging valid aspects of the traditional thesis while disputing its complete adequacy.

Adım Adım Çözüm

1
Analyze the passage structure and locate key stance indicators.
Paragraph 1 outlines the traditional view (printer efficiency). Paragraph 2 introduces a pivot ('However') calling the traditional view an oversimplification. Paragraph 3 offers a balanced synthesis.
Tracking structural transitions allows clear isolation of the author's voice from cited historical perspectives.
2
Evaluate the author's specific qualifications and concessions.
The author admits that printers 'undoubtedly preferred standardized forms for commercial expediency,' but insists standardization was a 'reciprocal synthesis' involving broader literate networks.
Identifying concessions helps distinguish between extreme rejection and a nuanced, qualified stance.
3
Match the identified tone with the correct description.
'Measured skepticism' accurately reflects an attitude that questions a traditional view's completeness without denying its core partial truth.
GMAT Reading Comprehension correct tone choices frequently employ moderated descriptors like 'measured', 'qualified', or 'cautious'.

Anahtar Kavram

Evaluating Author's Tone and Stance
Soru 1943Soru

Passage:
In mid-nineteenth-century Britain, the implementation of limited liability laws for joint-stock companies was intended by proponents to democratize investment by encouraging small savers to fund speculative industrial enterprises without risking personal ruin. However, legal historians note that early limited liability entities rarely attracted small-scale retail investors. Instead, capital aggregation was dominated by affluent elites who utilized the statutory liability cap primarily to diversify existing portfolios across multiple high-risk ventures rather than risk total exposure in a single firm. Crucially, contemporary bankruptcy court records reveal that creditor protections, which previously allowed lenders to claim personal assets of partners in un-incorporated partnerships, were not replaced by mandated minimum capital requirements for limited liability firms until decades later. Consequently, creditors faced heightened default risks, prompting them to demand higher interest rates on corporate debt. This risk premium effectively offset the lowered cost of equity capital for emerging firms. Furthermore, while unlimited liability partnerships continued to operate in traditional sectors like private banking, their access to capital markets gradually contracted as investors increasingly favored limited liability options despite the higher borrowing costs borne by those firms.

Which of the following can be most logically inferred from the passage regarding British corporate finance during the mid-nineteenth century?

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Cevap: The statutory limitation on investor liability led creditors to charge higher interest rates on corporate debt than would have been demanded had lenders retained recourse to partners' personal assets.

Cevap

The statutory limitation on investor liability led creditors to charge higher interest rates on corporate debt than would have been demanded had lenders retained recourse to partners' personal assets.
The correct option is directly supported by the passage's explicit causal chain. The text notes that creditor protections allowing lenders to claim partners' personal assets were eliminated under limited liability and not immediately replaced by capital requirements. The text explicitly states: 'Consequently, creditors faced heightened default risks, prompting them to demand higher interest rates on corporate debt.' This directly supports the inference that limiting investor liability led to higher interest rates on corporate debt than would have been charged had lenders retained access to partners' personal assets.

Adım Adım Çözüm

1
Identify the premises in the text that relate creditor risk, personal asset claims, and borrowing interest rates.
Premise 1: Creditor protections previously allowed lenders to claim personal assets of partners in un-incorporated partnerships.
Premise 2: These protections were not replaced by mandated minimum capital requirements for limited liability firms until decades later.
Premise 3: 'Consequently, creditors faced heightened default risks, prompting them to demand higher interest rates on corporate debt.'
Establishing the explicit causal chain connecting the loss of personal asset recourse to elevated default risk and higher interest rates.
2
Evaluate which statement must logically follow from this causal chain without introducing external assumptions.
Because the removal of recourse to personal assets directly increased default risk, which in turn caused creditors to demand higher interest rates, it logically follows that retaining recourse to personal assets would have resulted in lower interest rates (or that losing recourse caused higher interest rates than would otherwise exist).
A valid inference on GMAT Reading Comprehension must be strictly provable directly from the passage premises.

Anahtar Kavram

Drawing Deductive Inferences from Premise Chains
Soru 1944Soru

Passage:
In the mid-twentieth century, major European pharmaceutical companies funded basic research primarily through profits generated from legacy chemical patents. By the late 1960s, however, escalating regulatory standards lengthened the average clinical trial duration by nearly 50 percent, severely diminishing the net present value of newly filed patents. In response, corporate leadership shifted capital allocation toward acquiring nimble biotechnological startups rather than expanding in-house discovery labs. Concurrently, public universities began retaining intellectual property rights on federally funded discovery research, creating a robust secondary licensing market. Consequently, established pharmaceutical firms increasingly relied on university-derived patents for early-stage candidates, reserving their own internal resources almost exclusively for late-stage clinical trials and global distribution logistics.

Statement:
Based on the passage, the shift of internal resources in established pharmaceutical firms toward late-stage clinical trials was influenced by lengthened clinical trial durations that eroded the value of new patents.

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Cevap: True

Cevap

True
The statement is correct because it draws a valid logical deduction by combining evidence from sentences 2, 3, and 5. Sentence 2 establishes that regulatory changes lengthened clinical trials and reduced patent value. Sentence 3 explicitly states that firms shifted capital allocation 'in response' to this change, and sentence 5 confirms that 'consequently' firms reserved their internal resources almost exclusively for late-stage clinical trials.

Adım Adım Çözüm

1
Identify the cause stated in the earlier part of the passage regarding trial duration and patent value.
The second sentence shows that escalating regulatory standards lengthened clinical trial durations by nearly 50 percent, reducing the net present value of newly filed patents.
This establishes the initial economic pressure on in-house research.
2
Trace the structural pivots and corporate responses across subsequent sentences.
The third sentence shows that firms responded by shifting capital away from expanding discovery labs, and the final sentence explains that as a result ('consequently'), internal resources were reserved almost exclusively for late-stage clinical trials.
Synthesizing these points reveals a direct logical line from extended trial timelines/eroded patent value to the reallocation of internal resources.
3
Compare the synthesized passage logic to the provided statement.
The statement asserts a valid cause-and-effect relationship supported by combining non-contiguous sentences in the text.
Because the passage explicitly links these events using causal transitions ('In response', 'Consequently'), the statement is definitively True.

Anahtar Kavram

Multi-Sentence Synthesis Inferences
Soru 1945Soru

In early twentieth-century economics, Arthur Pigou and Frank Taussig engaged in a foundational debate over the mechanism driving differential freight rates charged by railway companies. Taussig contended that variations in freight tariffs across different commodities were predominantly cost-based, reflecting differences in joint production costs associated with hauling heterogeneous goods over a shared track infrastructure. According to Taussig, because distinct goods share common overhead expenses, pricing disparities simply represent an allocation of shared operational costs.

Conversely, Pigou argued that railway freight pricing constituted genuine monopoly price discrimination based on value of service rather than cost allocation. Pigou pointed out that railways possessed substantial market power over non-competing routes and asserted that tariff variations correlated far more closely with the market value of the transported goods than with any measurable differences in physical handling expenses. In Pigou's framework, high-value industrial machinery was charged significantly higher tariffs than low-value bulk agricultural produce not because machinery incurred higher marginal transportation costs, but because shippers of valuable goods exhibited lower price elasticity of demand.

Recent historical analyses of pre-1914 European railway ledgers attempt to resolve this dispute by demonstrating that when statutory price caps were imposed on high-value cargo routes, railway operators immediately altered their service schedules to reduce operational speeds and maintenance frequency on those specific routes. Analysts conclude from this adjustment that railway managers adjusted tariff structures primarily to maximize monopoly rents under varying demand elasticities, rather than to reflect joint cost burdens.

Which of the following is an unstated assumption required by the analysts' conclusion regarding railway managers' tariff adjustments?

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Cevap: Railway operators would not have selectively reduced operational speeds and maintenance frequency on high-value routes under price caps if their pricing had been primarily governed by joint production cost allocations.

Cevap

The analysts' conclusion relies on the assumption that railway operators would not have selectively reduced operational speeds and maintenance frequency on high-value routes under price caps if their pricing had been primarily governed by joint production cost allocations.
The correct answer identifies the fundamental logical bridge needed by the analysts. The analysts use the reduction of service speed and maintenance frequency on capped high-value routes as proof that pricing was driven by monopoly rent maximization rather than joint cost allocation. For this evidence to prove their claim, it must be true that such service reductions would not occur if joint cost allocation were the governing mechanism. Negating this statement reveals that if joint cost allocation also produced identical service reductions under price caps, the empirical evidence would fail to distinguish between the two theories, completely undermining the conclusion.

Adım Adım Çözüm

1
Identify the target conclusion and evidence presented in the passage
Evidence: Railway operators reduced operational speed and maintenance on high-value routes when price caps were imposed. Conclusion: Railway managers adjusted tariff structures primarily to maximize monopoly rents under varying demand elasticities, rather than to reflect joint cost burdens.
Establishing the precise gap between the premise (action taken after price caps) and the conclusion (motivation was monopoly price discrimination) is required before evaluating assumptions.
2
Formulate the necessary bridge connecting the observed behavioral change to the underlying motivation
The argument assumes that the observed change (speed/maintenance reduction under caps) is uniquely characteristic of monopoly rent-seeking behavior and would NOT have occurred if the cost-allocation model were true.
An assumption is an unstated premise without which the argument's inference fails.
3
Apply the Negation Test to verify the correct assumption
Negated statement: 'Railway operators WOULD have selectively reduced speeds and maintenance on high-value routes under price caps even if pricing were governed by joint cost allocations.' Under this negation, the observed reduction no longer serves as proof of monopoly rent maximization, destroying the analysts' conclusion.
If negating a statement invalidates the author's argument, that statement is a necessary unstated assumption.

Anahtar Kavram

Unstated Passage Assumptions (Negation Test in Reading Comprehension)
Soru 1946Soru

Passage:
In the early nineteenth century, optical instrument maker Joseph von Fraunhofer revolutionized observational astronomy by refining the manufacturing process of flint glass. Prior to Fraunhofer's innovations, optical telescopes suffered severely from chromatic aberration—the failure of a lens to focus all colors of light to the same convergence point—because available glass melted with inconsistent density and homogeneity. By developing specialized stirring techniques during the cooling phase of molten glass, Fraunhofer achieved unprecedented uniformity in large disk castings, allowing him to produce achromatic doublet lenses of exceptional clarity. In 1814, while testing the refractive properties of these superior flint glass prisms using a precision total-station darkroom apparatus, Fraunhofer observed hundreds of dark, narrow lines spanning the solar spectrum. Although previous observers such as William Hyde Wollaston had noted dark gaps in solar light, Wollaston had mischaracterized them as natural boundaries between discrete color bands. Fraunhofer systematically mapped over 570 of these lines, designating the prominent ones with capital letters from A to K. More importantly, he established that these dark lines appeared at fixed spectral positions regardless of atmospheric conditions or lens geometry. While Fraunhofer did not deduce the precise physical mechanism of atomic absorption—a breakthrough achieved decades later by Gustav Kirchhoff and Robert Bunsen—he explicitly demonstrated that these spectral lines were intrinsic features of sunlight itself rather than optical artifacts generated by the telescope lens or atmospheric interference.

According to the passage, Fraunhofer established which of the following regarding the dark spectral lines he mapped?

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Cevap: They constituted inherent properties of solar radiation rather than distortions produced by observational equipment or the Earth's atmosphere.

Cevap

Fraunhofer established that the dark spectral lines were intrinsic features of sunlight itself rather than optical artifacts generated by the telescope lens or atmospheric interference.
The passage explicitly indicates that Fraunhofer demonstrated the spectral lines were 'intrinsic features of sunlight itself rather than optical artifacts generated by the telescope lens or atmospheric interference.' The correct option accurately paraphrases this explicit finding.

Adım Adım Çözüm

1
Locate the specific passage text discussing what Fraunhofer established about the dark spectral lines.
Identified sentence near the end: '...he explicitly demonstrated that these spectral lines were intrinsic features of sunlight itself rather than optical artifacts generated by the telescope lens or atmospheric interference.'
Direct factual retrieval requires pinpointing the exact passage sentence containing the target detail.
2
Compare the located passage detail against the available options to find a semantic paraphrase.
The statement that the lines 'constituted inherent properties of solar radiation rather than distortions produced by observational equipment or the Earth's atmosphere' accurately paraphrases 'intrinsic features of sunlight itself rather than optical artifacts generated by the telescope lens or atmospheric interference.'
GMAT RC factual retrieval items paraphrase key terms (e.g., 'sunlight' -> 'solar radiation', 'optical artifacts' -> 'distortions produced by observational equipment').

Anahtar Kavram

Direct Factual Retrieval from dense academic text
Tahmini Süre:1m 30s
Soru 1947Soru

Over the past decade, evolutionary biologists studying urban wildlife adaptation have increasingly turned to epigenetic modifications—heritable changes in gene expression that do not alter the underlying DNA sequence��as a mechanism explaining the rapid phenotypic shifts observed in city-dwelling populations. Proponents of "urban epigenomics" argue that methyl-group additions to DNA allow organisms to adapt to urban stressors, such as noise and chemical pollution, across generations far more quickly than traditional natural selection upon standing genetic variation would permit.

While this framework offers an enticing explanation for swift adaptive responses, a rigorous examination of the empirical evidence reveals significant methodological limitations. Many recent studies rely on observational correlations between site-specific DNA methylation patterns and environmental variables, failing to establish whether these epigenetic marks are genuinely transgenerational or merely transient physiological acclimatizations induced within an individual's lifetime. Furthermore, controlled breeding experiments designed to isolate epigenetic inheritance from shared maternal environments remain sparse and frequently yield inconsistent results across species.

This is not to suggest that epigenetic mechanisms play no role in rapid adaptation. Rather, the current enthusiastic endorsement of epigenomics as a replacement for, rather than a potential supplement to, standard population genetics reflects a premature leap. Until researchers implement multi-generational lineage tracking that rigorously controls for environmental micro-refugia and parental care effects, claims asserting the primacy of epigenetic inheritance in urban evolutionary dynamics should be viewed as intriguing hypotheses awaiting robust verification rather than established paradigm shifts.

Which of the following best characterizes the author's attitude toward claims asserting the primacy of epigenetic inheritance in urban wildlife adaptation?

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Cevap: Measured skepticism that acknowledges the potential relevance of epigenetic mechanisms while highlighting current empirical and methodological deficiencies.

Cevap

The author's attitude is best characterized as measured skepticism that acknowledges the potential relevance of epigenetic mechanisms while highlighting current empirical and methodological deficiencies.
The correct answer accurately reflects the author's balanced stance. In the third paragraph, the author explicitly states that epigenetic mechanisms may play a role in rapid adaptation, but stresses that current claims asserting epigenomics as a replacement for standard genetics represent a 'premature leap' due to observational and experimental limitations. This combination of recognizing potential validity while insisting on rigorous empirical verification constitutes measured skepticism.

Adım Adım Çözüm

1
Analyze the passage structure and locate structural pivots indicating author opinion.
The author introduces proponents' enthusiasm in paragraph 1, shifts to critical analysis in paragraph 2 ('While this framework offers... empirical evidence reveals significant methodological limitations'), and summarizes their perspective in paragraph 3.
Tracking structural transitions distinguishes the author's voice from the viewpoints of researchers cited in the text.
2
Identify qualifying statements made by the author regarding the topic.
The author writes, 'This is not to suggest that epigenetic mechanisms play no role in rapid adaptation,' showing that they do not dismiss the topic entirely.
Qualifying statements prevent misinterpreting a critical stance as complete rejection.
3
Synthesize the overall stance into a precise descriptive tone.
Combining the acknowledgment of potential role with the insistence that current claims are a 'premature leap' awaiting 'robust verification' yields a stance of measured, qualified skepticism.
Matching author tone requires balancing both the positive qualifications and the negative criticisms present in the passage.

Anahtar Kavram

Evaluating Author's Tone and Stance
Tahmini Süre:2m 0s
Soru 1948Soru

Passage:
Archaeologists studying Neolithic trade networks in the Western Mediterranean have long debated the mechanism by which Lipari obsidian was distributed across Sardinia and coastal Etruria between 5000 and 4000 BCE. Traditional models posited a directional 'down-the-line' gift exchange system, in which obsidian artifacts passed sequentially through adjacent coastal settlements, diminishing exponentially in quantity with distance from the Lipari source. Proponents of this model argued that uniform reductions in bladelet size and high proportions of unworked core fragments at inland sites reflected local, non-specialized knapping of scarce material acquired through casual barter.

However, recent compositional analyses of obsidian assemblages at several inland Etrurian sites challenge this view. Researchers found that while raw obsidian nodules were indeed rare in these inland communities, finished obsidian blades exhibited remarkably standardized width-to-thickness ratios identical to those recovered from primary maritime workshop sites near Lipari. Furthermore, microscopic microwear analysis revealed that inland blades were almost exclusively utilized for high-precision tasks such as leatherworking rather than general domestic cutting. Based on these findings, Dr. Aris Thorne asserts that Lipari obsidian was not dispersed through informal down-the-line exchange, but was instead distributed via specialized merchant maritime cabotage directly supplying inland elites who commissioned specialized tools.

Which of the following, if true, would most weaken Dr. Thorne's assertion regarding the distribution mechanism of Lipari obsidian?

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Cevap: The standardized width-to-thickness ratio observed in obsidian blades is an unavoidable geometric artifact of basic pressure-flaking techniques routinely practiced by non-specialized household craftspeople across the region.

Cevap

The statement that standardized blade ratios are an unavoidable result of basic pressure-flaking techniques practiced by non-specialists directly weakens the author's argument by providing an alternative explanation for the physical evidence.
Dr. Thorne infers specialized merchant distribution from the presence of standardized blade dimensions identical to maritime workshops. If the standardized shape is simply an inherent outcome of basic pressure-flaking techniques available to any household craftsperson, the standardization ceases to serve as evidence of specialized workshop trade or elite distribution.

Adım Adım Çözüm

1
Identify Dr. Thorne's core assertion and supporting evidence.
Assertion: Lipari obsidian was distributed via specialized merchant maritime trade supplying elites, not informal down-the-line exchange. Supporting evidence: Inland blades show highly standardized dimensions identical to maritime workshops and show specialized microwear patterns.
To weaken an assertion, one must target the logical link between the evidence and the conclusion.
2
Evaluate how an alternative explanation affects the inference drawn from the evidence.
If standardized blade dimensions do not require specialized workshop production but instead naturally occur from simple, widely practiced domestic knapping techniques, then standardized ratios no longer imply specialized merchant workshops.
Demonstrating that the premise does not necessarily indicate specialized production removes the primary foundation of Dr. Thorne's conclusion.

Anahtar Kavram

Weakening an argument by undermining the assumption connecting physical evidence to specialized production or distribution models.
Soru 1949Soru

A logistics facility processes two types of parcels: Express packages and Standard packages. Last week, what percentage of the total parcels processed were Express packages?

(1) The average weight of an Express package was 4.54.5 kilograms, and the average weight of a Standard package was 2.52.5 kilograms.
(2) The overall average weight of all parcels processed last week was 3.13.1 kilograms.

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Cevap: BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

Cevap

Both statements together are sufficient, but neither statement alone is sufficient.
The correct response indicates that both statements together are sufficient, but neither statement alone is sufficient. Statement (1) provides only individual package weights, and Statement (2) provides only the overall average package weight. Neither statement alone reveals the mixture ratio. Combining both statements yields the weighted average equation 4.5E+2.5S=3.1(E+S)4.5E + 2.5S = 3.1(E + S), which simplifies to 1.4E=0.6S1.4E = 0.6S, establishing the unique ratio ES=37\frac{E}{S} = \frac{3}{7}. This uniquely determines that Express packages comprise 30%30\% of the total.

Adım Adım Çözüm

1
Define target variable and analyze the question stem
Let EE be the number of Express packages and SS be the number of Standard packages. The target question asks for the percentage EE+S×100%\frac{E}{E + S} \times 100\%. Finding the ratio ES\frac{E}{S} is sufficient to determine this percentage.
Rephrasing a percentage target into a ratio target simplifies statement evaluation.
2
Evaluate Statement (1) independently
Statement (1) states that the average weight of an Express package is 4.54.5 kg and a Standard package is 2.52.5 kg. Without knowing the overall average weight or relative proportion, ES\frac{E}{S} cannot be determined.
Knowing individual component averages alone leaves the weighted ratio undetermined.
3
Evaluate Statement (2) independently
Statement (2) states that the overall average weight is 3.13.1 kg. Without the individual component weights, the relative breakdown cannot be determined.
Knowing the combined average weight alone provides no boundary values for individual component rates.
4
Evaluate Statements (1) and (2) together
Using weighted average principles: 4.5E+2.5S=3.1(E+S)4.5E+2.5S=3.1E+3.1S1.4E=0.6SES=0.61.4=374.5E + 2.5S = 3.1(E + S) \Rightarrow 4.5E + 2.5S = 3.1E + 3.1S \Rightarrow 1.4E = 0.6S \Rightarrow \frac{E}{S} = \frac{0.6}{1.4} = \frac{3}{7}. The percentage of Express packages is 33+7×100%=30%\frac{3}{3 + 7} \times 100\% = 30\%.
Combining individual component averages with the overall weighted average determines a unique ratio of components.

Anahtar Kavram

Weighted Average Ratios in Data Sufficiency
Soru 1950Soru

Passage:
In legal history, the structural framework of 'jurisdictional redundancy' posits that maintaining overlapping adjudicative authorities among independent court systems serves as a vital safeguard against institutional bias and administrative inertia. Under this model, when litigants possess the latitude to select among competing judicial bodies within the same sovereign territory, no single tribunal can exercise monopolistic control over legal interpretation or procedural enforcement. The competition for caseloads theoretically incentivizes courts to maintain high standards of fairness and thoroughness to preserve their institutional prestige.

However, legal historians note that this decentralized equilibrium is susceptible to a systemic failure mode termed 'competitive procedural degradation.' This phenomenon manifests when one judicial venue introduces procedural modifications—such as truncating mandatory discovery timelines or lowering evidentiary thresholds—specifically calculated to expedite dispute resolution and attract commercial litigants. Although ostensibly adopted to enhance administrative efficiency, this strategy alters the competitive dynamics of the judicial ecosystem. Because commercial litigants frequently prioritize rapid resolution over exhaustive fact-finding, competing court systems face severe pressure to mirror these procedural relaxations to avoid institutional marginalization and diminishing caseloads. Consequently, the jurisdictional redundancy originally designed to guarantee procedural integrity instead instigates a reciprocal dismantling of evidentiary safeguards, ultimately compromising the quality of justice across the entire legal system.

Which of the following scenarios is most analogous to the process of 'competitive procedural degradation' described in the passage?

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Cevap: In academic publishing, several competing journals originally established independent peer-review panels to ensure rigorous evaluation. When one journal eliminates secondary editorial reviews to shorten publication timelines and attract more submissions, rival journals adopt identical shortcuts to avoid losing prospective authors, resulting in a widespread decline in published research quality.

Cevap

The scenario describing competing academic journals adopting peer-review shortcuts to prevent losing author submissions, leading to a widespread decline in research quality, is most analogous.
The correct answer isolates the core logical relationship of 'competitive procedural degradation': a multi-entity system where one actor introduces a quality-reducing shortcut to attract volume, compelling rival entities to mirror the same shortcut to stay competitive, thereby causing systemic quality degradation.

Adım Adım Çözüm

1
Analyze the core structural mechanism of 'competitive procedural degradation' in the passage.
Identified a four-part mechanism: (1) Multiple independent competitors exist in a system designed to preserve quality; (2) One competitor introduces a standard-lowering shortcut to gain volume/market share; (3) Other competitors are forced to mirror this lower standard to prevent losing market share; (4) The overall quality of the system deteriorates as a result.
Abstracting the logical relationship removes domain-specific details and allows cross-domain structural evaluation.
2
Evaluate the choices to find a parallel structural relationship in a novel domain.
The academic publishing scenario perfectly mirrors all four parts: competing journals, one eliminating reviews for speed/volume, rivals mirroring the shortcut to avoid losing authors, and overall research quality declining.
Matching structural components ensures logical equivalence between passage concept and target scenario.
3
Eliminate distractors based on structural misalignments or surface traps.
Eliminated the corporate law option (surface keywords without standard degradation), the fin-tech option (opposite effect: standards raised), the municipal option (centralized mandate rather than competitive pressure), and the aviation option (competitors refuse to mirror the shortcut).
Distractors exploit superficial keyword overlap, opposite impact directions, or missing structural elements.

Anahtar Kavram

Structural Abstraction and Parallel Logic Transfer
Soru 1951Soru

### Tab 1: Cold-Chain Storage & Transport Policy
Biopharmaceutical products stored and transported by BioLogix Supply Logistics are categorized into two climate classes:
- Category Alpha (Standard Vaccines): Must be maintained at transit temperatures between 2C2^\circ\text{C} and 8C8^\circ\text{C}.
- Category Beta (Advanced Biologics): Must be maintained at transit temperatures between 20C-20^\circ\text{C} and 15C-15^\circ\text{C}.

General Excursion Rule: If a shipment experiences a temperature excursion (a reading outside the specified temperature range) lasting longer than 45 continuous minutes, the shipment must be quarantined and rejected.

Conditional Exception: For Category Beta shipments, if the maximum ambient outside temperature during transit exceeds 35C35^\circ\text{C}, a temporary excursion up to 12C-12^\circ\text{C} is permitted for up to 60 continuous minutes, provided that the product is packaged in a Type-X thermal container.

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### Tab 2: Quarter 3 Logistics Monitoring Log
Shipment IDProduct CategoryContainer TypeMax Ambient Temp (C^\circ\text{C})Observed Excursion Temp (C^\circ\text{C})Excursion Duration (minutes)
Shipment 101Category AlphaStandard301040
Shipment 102Category BetaType-X38-1450
Shipment 103Category BetaStandard36-1355

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### Tab 3: Quality Assurance Advisory Memorandum
- Re-routing Note: Shipment 102 experienced high ambient humidity along its transit corridor; however, humidity levels do not alter thermal compliance thresholds.
- Container Verification: Standard thermal containers lack the phase-change insulation required for the ambient high-temperature exception clause. Category Beta shipments in Standard containers remain governed strictly by the General Excursion Rule regardless of outside ambient temperature.

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Based on the information provided across the three tabs, evaluate whether each of the following three statements is logically supported (Yes) or not supported (No):
1. Shipment 101 complies with the cold-chain policy and should be accepted without quarantine.
2. Shipment 102 qualifies for the Conditional Exception and should be accepted without quarantine.
3. Shipment 103 complies with the cold-chain policy and should be accepted without quarantine.

Which of the following correctly indicates the evaluation (Yes or No) for Statements 1, 2, and 3, respectively?

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Cevap: Statement 1: Yes; Statement 2: Yes; Statement 3: No

Cevap

Statement 1: Yes; Statement 2: Yes; Statement 3: No
The correct response evaluates Statement 1 as Yes because 40 minutes is under the 45-minute general threshold; Statement 2 as Yes because it meets all four criteria of the Conditional Exception (Category Beta, Type-X container, ambient temperature over 35°C, excursion temperature up to -12°C, and duration within 60 minutes); and Statement 3 as No because using a Standard container invalidates the exception clause, making its 55-minute excursion a violation of the 45-minute general rule.

Adım Adım Çözüm

1
Evaluate Statement 1 (Shipment 101)
Statement 1 is YES (Supported).
Tab 2 shows Shipment 101 is Category Alpha with a 40-minute excursion. Tab 1 states excursions under 45 minutes are acceptable under the General Excursion Rule.
2
Evaluate Statement 2 (Shipment 102)
Statement 2 is YES (Supported).
Tab 2 shows Shipment 102 is Category Beta in a Type-X container, ambient temp 38C38^\circ\text{C} (>35C> 35^\circ\text{C}), excursion 14C-14^\circ\text{C} (warmer than 15C-15^\circ\text{C} but within the allowed 12C-12^\circ\text{C} exception limit), and duration 50 mins (60\le 60 mins). Tab 1 and Tab 3 confirm it fulfills all criteria for the Conditional Exception.
3
Evaluate Statement 3 (Shipment 103)
Statement 3 is NO (Not Supported).
Tab 2 shows Shipment 103 is Category Beta in a Standard container. Tab 3 explicitly clarifies that Standard containers cannot use the high-ambient exception. Therefore, the General Excursion Rule applies, and its 55-minute duration exceeds the allowable 45-minute limit.

Anahtar Kavram

Dichotomous multi-tab evaluation requiring cross-tab synthesis of quantitative limits and conditional policy exceptions.
Tahmini Süre:2m 30s
Soru 1952Soru

To address severe pharmacist shortages in rural counties, several regional healthcare networks have proposed allowing certified technicians to dispense maintenance medications remotely under asynchronous supervision by off-site pharmacists. Opponents of this initiative argue that removing real-time pharmacist oversight increases the risk of medication errors and compromises patient safety. However, this objection overlooks recent clinical trial data from comparable districts showing that automated verification protocols eliminated virtually all dispensing errors. Therefore, the proposed relaxation of physical supervision requirements is likely to improve healthcare accessibility without undermining patient safety outcomes.

In the argument given, the two boldfaced portions play which of the following roles?

Cevabı ve açıklamayı göster

Cevap: The first is a proposed policy that the argument defends against an objection; the second is the main conclusion drawn by the argument.

Cevap

The first boldfaced portion is a proposed policy that the argument defends against an objection, and the second boldfaced portion is the main conclusion of the argument.
The correct answer accurately captures the dual structural roles. The first bolded text outlines the proposal put forward by regional healthcare networks, which opponents criticize and the author defends. The second bolded text presents the author's final judgment and overall position, introduced by the conclusion indicator 'Therefore', making it the main conclusion of the argument.

Adım Adım Çözüm

1
Analyze the main structure of the passage
The passage presents a new proposal by regional healthcare networks, introduces an objection by opponents, rebuts that objection using clinical trial data, and arrives at a final judgment.
Deconstructing the argument flow is essential for determining how each sentence functions structurally.
2
Determine the role of the first bolded statement
The first statement, 'allowing certified technicians to dispense maintenance medications remotely under asynchronous supervision by off-site pharmacists', describes the specific proposed policy being evaluated and defended.
It establishes the central action/proposal that the rest of the passage debates.
3
Determine the role of the second bolded statement
The second statement, 'the proposed relaxation of physical supervision requirements is likely to improve healthcare accessibility without undermining patient safety outcomes', follows the inference marker 'Therefore' and expresses the author's main claim.
It synthesizes the rebuttal of opponents' concerns into the definitive conclusion of the argument.

Anahtar Kavram

Identifying Boldface Roles in Critical Reasoning Arguments
Soru 1953Soru

Historians analyzing the decline of ancient Silk Road trading oases have traditionally held that the emergence of maritime trade routes rendered overland silk transport economically obsolete. However, recent tree-ring data from timbers used in oasis fortresses indicates that structural maintenance of these outposts continued unabated for over a century after maritime routes were fully established. Furthermore, records of regional toll collection demonstrate that overland traffic volume remained stable until a series of severe desiccation events dried up local glacial tributaries. The loss of local water supplies deprived these oases of the agricultural self-sufficiency required to resupply passing caravans. Therefore, the expansion of maritime trade was not the primary cause of the oases' downfall; rather, localized environmental collapse dismantled the overland network.

In the argument given, the two bolded portions play which of the following roles?

Cevabı ve açıklamayı göster

Cevap: The first is a position that the argument seeks to refute; the second is an intermediate conclusion offered in support of the argument's main conclusion.

Cevap

The correct answer states that the first bolded portion is a position that the argument seeks to refute, and the second is an intermediate conclusion offered in support of the argument's main conclusion.
The correct option accurately captures the argument's structure. The author introduces the traditional view—that maritime trade caused the decline—only to refute it with evidence about fortress maintenance and toll records. Thus, the first bolded statement is a position the argument seeks to refute. The second bolded statement connects the premise about dried-up tributaries to the overall downfall, functioning as an intermediate conclusion that leads to the author's final conclusion.

Adım Adım Çözüm

1
Identify the main conclusion and the author's overall stance.
The main conclusion is found in the final sentence: 'Therefore, the expansion of maritime trade was not the primary cause of the oases' downfall; rather, localized environmental collapse dismantled the overland network.' The author contends that environmental collapse, not maritime trade competition, caused the decline.
Determining the main conclusion provides the reference point needed to evaluate the function of all other statements in the argument.
2
Analyze the function of the first bolded statement.
The first bolded statement ('the emergence of maritime trade routes rendered overland silk transport economically obsolete') is introduced as a traditional historical belief that the author opposes using counter-evidence.
Understanding contrast words like 'However' helps establish that the author rejects this initial statement.
3
Analyze the function of the second bolded statement.
The statement ('The loss of local water supplies deprived these oases of the agricultural self-sufficiency required to resupply passing caravans') interprets the factual evidence regarding dried-up tributaries. It explains how that physical evidence led to economic failure, which directly supports the main conclusion.
Since it is a claim derived from premise evidence that further justifies the final conclusion, it acts as an intermediate (subsidiary) conclusion.

Anahtar Kavram

Analyzing Bolded Statement Roles
Soru 1954Soru

Passage:
In the early 2000s, semiconductor manufacturers faced physical limits when attempting to shrink silicon transistors using conventional deep ultraviolet (DUV) immersion lithography. To surpass these constraints, industry leaders invested in extreme ultraviolet (EUV) lithography, a process requiring high-power tin-plasma light sources and specialized mirrors operating in a vacuum. However, early EUV scanners suffered from extremely short collector mirror lifespans due to heavy debris bombardment from the tin-plasma generation. Consequently, many chipmakers opted to extend DUV lithography through complex multi-patterning techniques rather than adopt EUV prematurely. Multi-patterning increased the number of exposure steps per wafer—raising production costs and lowering manufacturing yields—yet it allowed fabrication plants to utilize existing, fully depreciated DUV equipment without committing massive capital to unproven EUV infrastructure. By 2018, breakthroughs in hydrogen-gas flushing systems significantly mitigated tin-debris deposition on EUV collector mirrors, stabilizing operational uptime and dramatically reducing mirror replacement costs. As a result, major foundries that had deferred EUV deployment were able to transition directly to commercial EUV production for sub-7-nanometer nodes without incurring the severe financial losses suffered by early EUV adopters who attempted integration prior to the hydrogen-flushing innovation.

Based on the passage, which of the following can be inferred about the semiconductor manufacturers that extended DUV lithography through multi-patterning prior to 2018?

Cevabı ve açıklamayı göster

Cevap: They accepted higher operational expenses per wafer to avoid upfront capital investment in EUV technology until collector mirror degradation issues were resolved.

Cevap

Semiconductor manufacturers that extended DUV lithography through multi-patterning accepted higher operational expenses per wafer in order to avoid upfront capital investment in unproven EUV technology until collector mirror degradation issues were resolved.
The correct answer combines evidence from two parts of the passage: the discussion of pre-2018 multi-patterning (which increased per-wafer costs but saved capital by using fully depreciated equipment) and the discussion of 2018 hydrogen-flushing advances (which solved the mirror degradation problem and allowed safe EUV deployment).

Adım Adım Çözüm

1
Analyze the question stem to locate target statements regarding pre-2018 multi-patterning DUV users.
Identify key facts across the passage: multi-patterning increased per-wafer costs and reduced yields, but allowed use of fully depreciated DUV tools without committing capital to unproven EUV infrastructure.
Synthesizing multi-sentence evidence is required to evaluate the economic tradeoff made by these manufacturers.
2
Integrate findings from later sentences regarding the 2018 technological breakthrough.
Note that 2018 hydrogen flushing solved the tin-debris issue on EUV collector mirrors, enabling deferred adopters to transition safely to EUV without early financial losses.
Connecting the rationale for deferral with the post-2018 outcome provides the complete logical basis for the inference.
3
Evaluate answer choices to select the statement strictly supported by this synthesis.
The option stating that manufacturers accepted higher per-wafer costs to avoid capital risks until mirror issues were resolved directly synthesizes these non-contiguous premises.
It captures both the tradeoff described in the middle of the passage and the resolution mentioned at the end.

Anahtar Kavram

Multi-Sentence Synthesis Inference
Soru 1955Soru

The table below displays operational metrics for eight semiconductor fabrication facilities (fabs).

Fab IDRegionWafer Yield Rate (%)Defect Density (defects/cm²)Monthly Capacity (k Wafers)Operating Cost per Wafer ($)
Fab AlphaAsia-Pacific94.20.08120450
Fab BetaNorth America91.50.1285520
Fab GammaEurope95.80.0560490
Fab DeltaAsia-Pacific91.50.10140410
Fab EpsilonEurope93.00.0995475
Fab ZetaNorth America94.20.07110510
Fab EtaAsia-Pacific89.80.15150390
Fab ThetaEurope95.80.0670465

Evaluate the following statement as True or False:

If the table is sorted primarily by Wafer Yield Rate (%) in descending order, and secondarily by Defect Density (defects/cm²) in ascending order to break ties, the facility ranked 4th has a lower Monthly Capacity than the facility ranked 3rd.

Cevabı ve açıklamayı göster

Cevap: False

Cevap

The statement is False.
Sorting primarily by Wafer Yield Rate (%) descending places facilities with 95.8%95.8\% yield in positions 1–2 and facilities with 94.2%94.2\% yield in positions 3–4. To break the tie for positions 3 and 4, we sort Defect Density in ascending order. Fab Zeta (0.070.07 defects/cm²) precedes Fab Alpha (0.080.08 defects/cm²). Thus, Fab Zeta is ranked 3rd with a capacity of 110110 k wafers, and Fab Alpha is ranked 4th with a capacity of 120120 k wafers. Since 120120 is greater than 110110, the statement claiming the 4th-ranked facility has a lower capacity is False.

Adım Adım Çözüm

1
Identify the primary sorting criterion and group facilities by Wafer Yield Rate (%) in descending order.
Group 1 (95.8%95.8\%): Fab Gamma, Fab Theta
Group 2 (94.2%94.2\%): Fab Alpha, Fab Zeta
Group 3 (93.0%93.0\%): Fab Epsilon
Group 4 (91.5%91.5\%): Fab Beta, Fab Delta
Group 5 (89.8%89.8\%): Fab Eta
Primary sort requires ordering by highest Wafer Yield Rate first.
2
Apply the secondary sorting criterion (Defect Density in ascending order) to break ties in the top groups to determine ranks 1 through 4.
For Group 1 (95.8%95.8\%):
- Fab Gamma (0.050.05) ranks 1st
- Fab Theta (0.060.06) ranks 2nd

For Group 2 (94.2%94.2\%):
- Fab Zeta (0.070.07) ranks 3rd
- Fab Alpha (0.080.08) ranks 4th
Ascending order means lower numerical defect density comes first.
3
Compare the Monthly Capacity values of the 3rd and 4th ranked facilities.
- 3rd Ranked (Fab Zeta): 110110 k Wafers
- 4th Ranked (Fab Alpha): 120120 k Wafers
Since 120>110120 > 110, the 4th-ranked facility has a higher capacity than the 3rd-ranked facility.
Verifies whether the condition '4th-ranked facility has a lower Monthly Capacity than 3rd-ranked facility' holds true.

Anahtar Kavram

Multi-Column Sorting and Secondary Tie-Breaking Logic
Soru 1956Soru

Read the passage below and match each numbered statement from the argument to its corresponding structural role in the passage:

"Proponents of drought-resistant genetically modified (GM) crops argue that widespread adoption is essential to safeguard global food security against climate volatility. However, organic farming advocates contend that introducing GM varieties threatens biodiversity through cross-pollination with wild species. Defenders of GM technology counter this by noting that stringent buffer zones effectively mitigate cross-pollination risks. Nonetheless, skeptical policy analysts maintain that smallholder farmers in developing nations will become economically dependent on multinational seed corporations regardless of environmental safeguards."

Match each statement on the left with its correct structural role on the right.

Soldaki öğeye tıklayın, sonra eşleşen sağdaki öğeye tıklayın

Öğeler

Introducing GM varieties threatens biodiversity through cross-pollination with wild species.
Stringent buffer zones effectively mitigate cross-pollination risks.
Smallholder farmers in developing nations will become economically dependent on multinational seed corporations.
Widespread adoption of drought-resistant GM crops is essential to safeguard global food security.

Eşleşmeler

Cevabı ve açıklamayı göster

Cevap

The statement regarding biodiversity threats matches the opposing position raised to challenge GM crop adoption; the buffer zone claim matches the counterargument presented to weaken the environmental objection; the economic dependence claim matches the main conclusion of the skeptical policy analysts; and the food security claim matches the primary claim supporting the initial proposal.
The matching correctly identifies the precise argumentative role of each claim based on structural indicators: biodiversity threats represent an opposing stance, buffer zones function as a defense counterargument against that stance, economic dependence forms the final conclusion of policy analysts, and food security is the foundational rationale for the initial position.

Adım Adım Çözüm

1
Analyze the structural role of the claim regarding biodiversity threats.
It follows the contrast transition 'However' and expresses the organic advocates' objection, acting as an opposing position to the main proposal.
Identifying transition keywords helps distinguish opposing viewpoints from supporting premises.
2
Determine the role of the statement about buffer zones.
It is introduced by defenders of GM technology to refute the cross-pollination objection, functioning as a counterargument against the opponents' objection.
A claim that directly rebuts an opposing argument serves as a counter-rebuttal/counterargument within the debate.
3
Determine the role of the claim about smallholder farmers' economic dependence.
It follows 'Nonetheless' and presents the central conclusion maintained by policy analysts.
The word 'Nonetheless' signals that despite the rebuttal about buffer zones, a new overriding counter-conclusion is reached.
4
Determine the role of the claim regarding food security.
It opens the passage as the main supporting rationale of GM crop proponents.
The opening sentence establishes the initial positive position that the subsequent counterarguments react against.

Anahtar Kavram

Identifying Counterarguments and Opposing Positions
Soru 1957Soru

The table below presents operational and usage metrics for eight branch locations within a regional public library network during 2025:

Branch CodeTotal Volumes (thousands)Active Cardholders (thousands)Annual Circulations (thousands)Operating Expenses ($ thousands)Digital Resource Accesses (thousands)
CEN450609003,600300
NOR120253001,000150
EAS801616064080
WES15020240960120
SOU200405001,500250
RIV901822572090
HAR11022220880110
UPL160324801,440160

Consider the following three statements regarding the data:

I. The median number of Annual Circulations among the branches with more than 20,000 Active Cardholders is greater than 350,000.
II. For Eastgate (EAS), the ratio of Annual Circulations per Total Volume is higher than that for West End (WES).
III. Exactly three branches satisfy both of the following conditions: Operating Expenses per Circulation are strictly less than $4.00, AND Digital Resource Accesses exceed 140,000.

Which of the following correctly identifies the truth values (True or False) of Statements I, II, and III, respectively?

Cevabı ve açıklamayı göster

Cevap: Statement I: True; Statement II: True; Statement III: True

Cevap

Statement I: True; Statement II: True; Statement III: True
The correct option is the one identifying all three statements as True. Statement I is True because the median circulation of the 5 filtered branches is 480,000, which exceeds 350,000. Statement II is True because EAS has a circulation-to-volume ratio of 2.0 compared to 1.6 for WES. Statement III is True because NOR, SOU, and UPL are the exactly three branches that satisfy both expenses per circulation < $4.00 and digital accesses > 140,000.

Adım Adım Çözüm

1
Evaluate Statement I by filtering and sorting.
Branches with Active Cardholders > 20 (in thousands) are CEN (60), NOR (25), SOU (40), HAR (22), and UPL (32), total 5 branches. Their Annual Circulations (in thousands) are 900, 300, 500, 220, and 480. Sorting these values yields 220, 300, 480, 500, 900. The median (3rd value) is 480 thousand (480,000). Since 480,000 > 350,000, Statement I is True.
Filtering required strict application of the cardholder threshold before ordering the circulation data.
2
Evaluate Statement II by calculating row ratios.
For EAS, Circulations / Volumes = 160 / 80 = 2.0. For WES, Circulations / Volumes = 240 / 150 = 1.6. Since 2.0 > 1.6, Statement II is True.
Ratio comparison requires placing Circulations in the numerator and Volumes in the denominator.
3
Evaluate Statement III using dual-condition logical filtering.
Calculate Operating Expenses (thousands)/AnnualCirculations(thousands)toget thousands) / Annual Circulations (thousands) to get per circulation: CEN (3,600 / 900 = 4.00),NOR(1,000/300=4.00), NOR (1,000 / 300 = 3.33), EAS (640 / 160 = 4.00),WES(960/240=4.00), WES (960 / 240 = 4.00), SOU (1,500 / 500 = 3.00),RIV(720/225=3.00), RIV (720 / 225 = 3.20), HAR (880 / 220 = 4.00),UPL(1,440/480=4.00), UPL (1,440 / 480 = 3.00). Branches with expense per circulation strictly less than $4.00 are NOR, SOU, RIV, and UPL. Among these, Digital Resource Accesses (> 140 thousand) are NOR (150), SOU (250), and UPL (160). RIV has only 90. Exactly 3 branches meet both conditions. Statement III is True.
Strict inequality rules out branches with expenses per circulation equal to $4.00.

Anahtar Kavram

Multi-Statement Boolean Evaluation on Tabular Data
Soru 1958Soru

The table below details operational metrics for 10 wind turbines managed by a renewable energy utility during the previous calendar year:

Turbine IDRegionCapacity (MW)Availability (%)Unplanned Maintenance (hours)
T-01Offshore6.094.248
T-02Onshore4.097.518
T-03Offshore8.091.084
T-04Onshore3.598.112
T-05Offshore6.095.836
T-06Offshore8.093.562
T-07Onshore4.096.024
T-08Offshore6.092.470
T-09Onshore3.598.88
T-10Offshore8.096.528

Based on the table, what is the median number of unplanned maintenance hours for turbines located in the Offshore region?

Cevabı ve açıklamayı göster

Cevap: 55

Cevap

The median number of unplanned maintenance hours for turbines in the Offshore region is 55 hours.
Filtering the table for Offshore turbines yields 6 entries with unplanned maintenance hours of 48, 84, 36, 62, 70, and 28. Arranging these values in ascending order gives {28, 36, 48, 62, 70, 84}. Because the count is even (N = 6), the median is the average of the 3rd and 4th elements: (48 + 62) / 2 = 55 hours.

Adım Adım Çözüm

1
Filter the dataset by Region
Identified 6 turbines in the Offshore region: T-01 (48 hrs), T-03 (84 hrs), T-05 (36 hrs), T-06 (62 hrs), T-08 (70 hrs), and T-10 (28 hrs).
The question specifically restricts the calculation to turbines operating in the Offshore region.
2
Sort the filtered unplanned maintenance hours in ascending order
Ordered set: 28, 36, 48, 62, 70, 84.
Finding the median requires data elements to be arranged sequentially.
3
Calculate the median of the even-count dataset (N = 6)
The two middle values are the 3rd element (48) and the 4th element (62). Mean = (48 + 62) / 2 = 55.
When a dataset contains an even number of observations, the median is the arithmetic average of the two central terms.

Anahtar Kavram

Descriptive Statistics Interpretation (Median of Even-Count Filtered Subsets)
Tahmini Süre:1m 30s
Soru 1959Soru

Passage:
In evolutionary biology, the 'island rule' posits that large terrestrial mammal species evolving on isolated islands tend to dwarf over time due to resource limitations, whereas small mammal species undergo gigantism due to reduced predation pressure. Paleontologists examining fossil deposits of the extinct insular rodent Canariomys bravoi on Tenerife observed a 40% increase in body mass compared to its mainland ancestors over a 200,000-year period. The researchers asserted that this body mass increase was primarily driven by the absence of terrestrial predators on the island.

Statement: Discovering abundant fossilized remains of an extinct giant raptor on Tenerife that preyed extensively on large rodents during that same 200,000-year period would weaken the researchers' assertion.

Is the statement above True or False?

Cevabı ve açıklamayı göster

Cevap: True

Cevap

True
The statement correctly identifies that the discovery of an active predator undermines the researchers' assertion. The researchers attribute the rodent's gigantism specifically to the absence of predation pressure. Demonstrating that an abundant predator hunted these rodents during the exact evolutionary window undermines the assumed absence of predators, weakening the causal claim.

Adım Adım Çözüm

1
Identify the author's core assertion and underlying premises.
The researchers claim that the 40% increase in body mass of Canariomys bravoi was primarily driven by the absence of terrestrial predators.
To evaluate a strengthening or weakening statement, one must clear isolate the specific causal claim being made in the text.
2
Analyze the potential impact of the new finding presented in the statement.
The statement introduces evidence of a giant raptor on the island that preyed heavily on large rodents during the same 200,000-year era.
New evidence introducing an active, dedicated predator shows that predation pressure was present and significant during the period of gigantism.
3
Determine whether the new evidence strengthens or weakens the assertion.
Since the assertion relies on the absence of predation as the primary cause, proof of strong predation pressure directly weakens the claim.
Countering the key premise of an argument invalidates the proposed causal mechanism.

Anahtar Kavram

Strengthening or Weakening Author Assertions
Soru 1960Soru

Passage:
In organizational governance, the phenomenon of "defensive compliance drift" describes a structural failure mode wherein an institution implements automated oversight controls to satisfy regulatory mandates, only for operational personnel to adapt by shifting high-risk behaviors into procedural blind spots created by those very controls. Initially, the automated system successfully detects targeted infractions, leading management to reduce manual supervisory audits under the impression that systemic vulnerability has decreased. However, frontline operators quickly discern the precise threshold criteria of the automated monitoring algorithms. To maintain aggressive production targets under operational pressure, operators intentionally modify their workflows to execute risky transactions just outside the defined parameters of the automated system—effectively operating within an unmonitored shadow zone. Consequently, overall organizational risk escalates, even while the automated compliance reporting metrics consistently display false signals of heightened operational safety.

Which of the following hypothetical scenarios is most analogous to the process of "defensive compliance drift" described in the passage?

Cevabı ve açıklamayı göster

Cevap: A municipal transport authority installs automated speed-enforcement cameras along primary avenues, causing drivers to divert onto unmonitored residential side streets at elevated speeds to maintain commute times, which leads traffic police to reduce patrols on main thoroughfares and results in a net increase in citywide vehicular accidents despite clean traffic report metrics on the main avenues.

Cevap

The scenario involving municipal speed cameras installing automated controls on main avenues, leading drivers to speed on unmonitored residential streets while police reduce main-road patrols, which results in higher net citywide accidents despite clean main-avenue metrics.
The correct answer accurately mirrors the structural mechanism of 'defensive compliance drift'. The automated speed cameras act as the automated control, the decrease in police patrols represents the reduction in manual oversight, the drivers shifting to residential side streets at high speed mirrors operators adapting to conduct risky behaviors in procedural blind spots, and the net increase in citywide accidents alongside clean main-avenue camera metrics reflects heightened aggregate risk masked by reassuring automated reports.

Adım Adım Çözüm

1
Deconstruct the core functional relationship and mechanism presented in the passage.
Defensive compliance drift consists of four structural elements: (1) An automated control is introduced to monitor a specific risk; (2) Management relies on the automated tool and reduces manual oversight; (3) Operational actors identify the explicit parameters of the automated control and alter their behavior to conduct risky activities just outside those parameters; (4) Total systemic risk increases, even though the automated metrics report high safety.
Abstracting the core structural relationship away from the domain details (governance/corporate compliance) is required to evaluate parallel analogies.
2
Evaluate the choices against all four structural elements of the passage mechanism.
The traffic authority scenario contains all four components: automated speed cameras (automated control), reduction in police patrols on main roads (reduced manual oversight), drivers speeding on unmonitored residential side streets (shifting risk to blind spots to meet targets), and higher total citywide accidents despite clean metrics on main avenues (increased systemic risk with false signals of safety).
Matching every structural node ensures accurate application of passage logic to a novel domain.

Anahtar Kavram

Structural Transfer of Abstract Mechanisms (Analogy in Reading Comprehension)
Tahmini Süre:2m 30s
ÖncekiSayfa 98 / 110Sonraki
Tüm alıştırma soruları — GMAT | Examkin