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Question

Refer to the following letter series and answer the question. (Counting to be done from left to right only) 

(Left) R C X Z H M E D F T B S I K A Q Y O W G U (Right) 

How many such consonants are there, each of which is immediately preceded by a consonant and also immediately followed by a consonant?

This question was previously asked in
RRB NTPC 2025 Graduate CBT 2 Question Paper PDF (10-Jul-2026) (Shift 1)
The correct answer is

7

Scanning the series left to right, checking each consonant for a preceding consonant and a following consonant, treating Y as a consonant.

Systematically checking all 21 letters against the vowels A, E, I, O, U identifies seven consonants satisfying both the preceding and following conditions.

Hence, there are 7 such consonants in the series.

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