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Question

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

This question was previously asked in
RRB ALP 2025 CBT 2 Wiremen Question Paper (28-Jul-2026) (Shift 2)
The correct answer is
VZI

To solve this problem, let's examine the sequence of letter triplets given: PTC, KOX, FJS, AEN, ?. We need to identify the pattern in these triplets based on the English alphabetical order and determine the missing triplet.

  1. Identify the pattern for each position within the triplets:
    • The first letters of the triplets are P, K, F, A. Each subsequent letter is obtained by subtracting 5 from the previous letter in alphabetical order:
      • P (16th alphabet) - 5 = K (11th alphabet)
      • K (11th alphabet) - 5 = F (6th alphabet)
      • F (6th alphabet) - 5 = A (1st alphabet)
      • Following this pattern, A (1st alphabet) - 5 = V (22nd alphabet, due to wrapping around the alphabet)
  2. Examine the second letters of the triplets:
    • The sequence for second letters is T, O, J, E, decreasing by a pattern of 5 as well:
      • T (20th alphabet) - 5 = O (15th alphabet)
      • O (15th alphabet) - 5 = J (10th alphabet)
      • J (10th alphabet) - 5 = E (5th alphabet)
      • Following this logic, E (5th alphabet) - 5 = Z (26th alphabet, taking into account the wraparound)
  3. Evaluate the third letters of the triplets:
    • The sequence is C, X, S, N, following the pattern by subtracting 5:
      • C (3rd alphabet) - 5 = X (24th alphabet, considering wraparound)
      • X (24th alphabet) - 5 = S (19th alphabet)
      • S (19th alphabet) - 5 = N (14th alphabet)
      • Continuing this pattern, N (14th alphabet) - 5 = I (9th alphabet)
  4. Conclusion: Putting all the computed letters together, the missing triplet is VZI.

Therefore, the correct answer is VZI.

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Similar Questions

  1. In the following series, one term is missing as shown by the question mark(?). Select the missing term from the given options.
    A, BC, DEF, GHIJ, ?

  2. A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.

    TTTTTTO, TTTTTOT, TTTTOTT, TTTOTTT
  3. Select the term missing from the given series.

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  5. I, L, O, R, ?

    In the following series, one letter is missing as shown by the question mark (?). Select the missing letter from the given options.
  6. In the following letter series, one letter is missing as shown by the question mark (?). Select the missing letter from the given options.

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  7. What should come in place of the question mark (?) in the given series based on the English alphabetical order?
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  8. What should come in place of the question mark (?) in the given series based on the English alphabetical order?
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    (Left) K S U L H A A E G H L A J Z X G U P E U P H (Right)
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Important Questions from Alphabet Series

  1. A series is given with some letters missing. Choose the correct alternative from the given ones that will complete the series:

    BR __ __ NB __ O __ NB
  2. A series is given with some letters missing. Choose the set of letters which when sequentially placed shall complete it .

    a __ __ dba __ __ bcad __ __ da __ __ cd
  3. In the following letter series, some of the letters are missing which are given in that order as one of the alternatives below It. Choose the correct alternative

    _ a _ b _ abaa _ bab _ abb
  4. Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.

    Q _ P _ M _ A _ T _ Q A _ T M

  5. In the series _b_a_ba_b_abab_aab;

    fill in the six blanks ( _ ) using one of the following given four choices such that the series follows a specific order.

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