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Difficulty: MediumAnalogy and Classification

In a certain logical classification system, the word PLANET\text{PLANET} is related to the letter-group KODMHG\text{KODMHG}. Following the same analogical pattern, which of the following letter-groups corresponds to the word MODULE\text{MODULE}?

  1. NRWXOH\text{NRWXOH}Answer
  2. B
    NLWFOV\text{NLWFOV}
  3. C
    PRGXOH\text{PRGXOH}
  4. D
    PLGFOV\text{PLGFOV}

Answer

The correct letter-group is NRWXOH\text{NRWXOH}.
The established logical rule applies two different transformations based on letter type. Consonants are replaced by their alphabetical opposites (mirror letters), while vowels are shifted forward by 3 positions. Applying this to MODULE\text{MODULE}: the consonants M, D, L mirror to N, W, O, and the vowels O, U, E shift forward by 3 to R, X, H. Combining these yields NRWXOH\text{NRWXOH}.

Step-by-Step Solution

1
Analyze the consonants in the reference word PLANET\text{PLANET}.
The consonants P, L, N, T\text{P, L, N, T} become K, O, M, G\text{K, O, M, G}.
To identify the specific logical operation applied to consonants. Each consonant is replaced by its alphabetical mirror (e.g., the 16th letter from the start, P, becomes the 16th letter from the end, K).
2
Analyze the vowels in the reference word PLANET\text{PLANET}.
The vowels A, E\text{A, E} become D, H\text{D, H}.
To identify if vowels follow the same or a different rule. Each vowel is shifted forward by exactly 3 positions in the alphabet (A+3=D, E+3=H).
3
Separate the target word MODULE\text{MODULE} into consonants and vowels.
Consonants: M, D, L\text{M, D, L}. Vowels: O, U, E\text{O, U, E}.
To accurately apply the distinct coding rules established in the previous steps.
4
Apply the corresponding rules to the letters of MODULE\text{MODULE}.
Consonants (mirror): M→N\text{M} \rightarrow \text{N}, D→W\text{D} \rightarrow \text{W}, L→O\text{L} \rightarrow \text{O}. Vowels (+3 shift): O→R\text{O} \rightarrow \text{R}, U→X\text{U} \rightarrow \text{X}, E→H\text{E} \rightarrow \text{H}.
To generate the individual components of the final coded string.
5
Reassemble the transformed letters in their original order.
The sequence is N, R, W, X, O, H\text{N, R, W, X, O, H}.
To form the final answer based on the analogical framework.

Key Concept

Dual-Pattern Alphabetical Analogy
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Topics

Analogy and Classification

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