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Zorluk: OrtaValue vs. Yes/No Data Sufficiency Decision Logic

In GMAT Data Sufficiency logic, if a statement determines a single unique numerical value for a variable xx, that statement is sufficient to answer a 'Value' question asking for the exact value of xx, but is insufficient to answer a 'Yes/No' question asking whether x>5x > 5.

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The statement is False. A single unique value for xx provides complete information to answer both a 'Value' question for xx and any 'Yes/No' question regarding xx.
The correct response is False because a statement that yields a single unique numerical value for a variable xx provides complete information about xx. Substituting that single value into the inequality x>5x > 5 results in either a definitive 'Yes' or a definitive 'No'. Because both definitive outcomes satisfy GMAT Data Sufficiency criteria, the statement is sufficient for both question types.

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1
Analyze the condition for sufficiency in a 'Value' Data Sufficiency question.
A 'Value' question requires determining one single, unique value for the variable. Finding a unique value for xx satisfies this requirement.
If more than one value is possible, the statement is insufficient.
2
Analyze the condition for sufficiency in a 'Yes/No' Data Sufficiency question.
A 'Yes/No' question requires a definitive 'Yes' or a definitive 'No'.
Sufficiency means eliminating all ambiguity in the binary decision.
3
Evaluate the effect of knowing a single unique value of xx on the inequality x>5x > 5.
If xx is fixed at a single value (e.g., x=7x = 7), the answer is a definitive 'Yes'. If xx is fixed at another single value (e.g., x=3x = 3), the answer is a definitive 'No'.
In either case, a single value produces a definitive answer with no remaining ambiguity.

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Value vs. Yes/No Data Sufficiency Decision Logic
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Value vs. Yes/No Data Sufficiency Decision Logic

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