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Difficulty: MediumAnalogy and Classification

Study the logical relationship between the first pair of letter-clusters. Applying the identical underlying rule, what will replace the question mark to complete the second pair?

BIRD:ERUW::FISH:?\text{BIRD} : \text{ERUW} :: \text{FISH} : \text{?}

  1. A
    ILVK
  2. B
    HRUS
  3. IRVSAnswer
  4. D
    ULHK

Answer

IRVS
The underlying pattern alternates between a forward alphabetical shift of 3 positions and finding the reverse alphabetical equivalent letter. Applying this strictly to the word 'FISH' yields 'I' (F+3), 'R' (reverse of I), 'V' (S+3), and 'S' (reverse of H), resulting in 'IRVS'.

Step-by-Step Solution

1
Analyze the transformation from BIRD to ERUW position by position.
1st letter (B to E) is a +3 forward shift. 2nd letter (I to R) is the reverse alphabetical pair. 3rd letter (R to U) is a +3 forward shift. 4th letter (D to W) is the reverse alphabetical pair.
Establishing the exact sequence of logical operations applied to the first pair is necessary to solve the analogy.
2
Apply the identical transformation rule to the target word FISH.
1st letter (F) + 3 = I. 2nd letter (I) reverse = R. 3rd letter (S) + 3 = V. 4th letter (H) reverse = S.
The analogy requires the second pair to exhibit the exact same multi-step operational pattern as the first pair.

Key Concept

Alphabet/Letter Pattern Analogy using compound positional rules
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Topics

Analogy and Classification

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