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RAS question

ACEG : BDFH :: MOQS : ?

Correct answer: (B) NPRT.

In the analogy ACEG : BDFH :: MOQS : ?, each letter moves one place forward in the alphabet, so MOQS becomes NPRT.

  1. (A)

    NPRТ

  2. (B)

    NPRT

  3. (C)

    LNPR

  4. (D)

    NQSU

Explanation

The pattern is a direct one-step alphabet shift. In the first pair, ACEG becomes BDFH because A moves to B, C moves to D, E moves to F, and G moves to H. Applying the same rule to MOQS gives M to N, O to P, Q to R, and S to T, so the missing group is NPRT. The cited NCERT-CIIL primer is a letter-learning source: it introduces alphabets, letter recognition, reading, and writing practice, which is the same basic skill this reasoning item tests. No reversal, alternate skipping, or positional rearrangement is needed; the only operation is moving each given letter one step forward.

Why the other options are wrong

  • (A) A gives the visible sequence NPRT but its final character is not the plain English letter T required by the M to N, O to P, Q to R, S to T shift.
  • (C) C shifts M backwards to L and then continues with a different sequence, so it does not follow the one-place-forward rule shown by ACEG to BDFH.
  • (D) D shifts M to N but then gives O to Q, Q to S, and S to U, which changes the rule from plus one to plus two after the first letter.

Concept

This tests alphabet analogy under Reasoning and Mental Ability: identify the operation in the first letter group and apply it unchanged to the second. Such questions recur in RAS because they quickly test rule recognition, sequence handling, and consistency under time pressure.

Source

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