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Question

What should come in place of the question mark (?) in the given series based on the English alphabetical order?

 ACE HJL OQS VXZ ?

This question was previously asked in
RRB NTPC 2025 Under Graduate CBT 1 Question Paper PDF (20-Jun-2026) (Shift 3)
The correct answer is

CEG

Tracking each letter position across ACE, HJL, OQS, VXZ: the first letters (A, H, O, V) increase by 7 each time, giving the next letter \(V+7=C\) (wrapping around).

The second letters (C, J, Q, X) increase by 7 each time, giving the next letter \(X+7=E\).

The third letters (E, L, S, Z) increase by 7 each time, giving the next letter \(Z+7=G\).

Hence, the missing cluster is CEG.

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Important Questions from General Series of Alphabets

  1. Select the option that represents the letters that, when sequentially placed from left to right in the blanks below, will complete the letter series.

    R _ _ ODRMN _ _ _ MN _ DR _ NO _

  2. Each vowel in the word "FOREFOOT" is changed to the following letter in the English alphabetical series and each consonant is changed to the previous letter in the English alphabetical series. In the newly formed word, how many alphabets are there in the English alphabetical series between the alphabet which is 2nd from the left and 1st from the right?

  3. If the letters in the word ‘UNIVERSAL’ are arranged in the alphabetic order and each letter in the order is assigned a numerical value of 1, 2, 3 …. according to their position from the left, then the sum of the numerical values of the position of the consonants will be:

  4. In the given sequence, if every letter from the 8 th position from the left side is replaced by its next letter in the English alphabet series, then how many Vs will be there in the resulting sequence?

    ZUDJKNCXVCSLLIEBSFJVATWQK

  5. If the letters in the word BACKFIELED are arranged as in the English alphabetical order, then which letter will be to the second right of the letter ‘F’, after the rearrangement?

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