All Exams Test series for 1 year @ ₹349 only
Question

Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete?

ZSL 18, VOH 29, RKD 40, NGZ 51, JCV 62, ?

This question was previously asked in
RRB Group D 2024 Question Paper PDF (21-Dec-2025) (Shift 2)
The correct answer is

FYR 73

Track the first letter of each cluster: Z, V, R, N, J — each one moves back by 4 (Z→V→R→N→J), so the next first letter is J − 4 = F.

Track the second letter: S, O, K, G, C — each moves back by 4 (S→O→K→G→C), so the next second letter is C − 4 = Y.

Track the third letter: L, H, D, Z, V — each moves back by 4 (L→H→D→Z→V, wrapping past A), so the next third letter is V − 4 = R.

Track the numbers: 18, 29, 40, 51, 62 — each increases by 11, so the next number is 62 + 11 = 73.

Hence, the missing cluster is FYR 73.

Was this answer helpful?

Important Questions from Letter and Number Based

  1. Select the option in which the numbers are related in the same way as are the numbers of the following set.

    (4, 8, 16)

  2. Select the option that is related to the third number in the same way as the second number is related to the first number.

    23 : 441 : : 28 : ?

  3. Select the option that is related to the third number in the same way as the second number is related to the first number and the sixth number is related to the fifth number.

    12 : 72 ∷ 18 : ? ∷22 : 242
  4. Select the option that is related to the third number in the same way as the second number is related to the first number.

    7 : 56 :: 11 : ?

  5. Select the option in which the numbers are related in the same way as are the numbers of the following set.

    (12, 60, 84)

Need Expert Advice?
Upcoming Exams
RRB ALP
July 28, 2026
RRB Group D
August 03, 2026
Test Series
RRB Group D img
Railways
RRB Group D Mock Test Series 2026 (Latest Pattern)
786 Tests 1 Tests Free
695 Attempts
4.1(78)
English

Start Your Preparation with Prepp Mobile App

Download the app from Google Play & App Store
Download the app from Google Play & App Store
Prepp Mobile App