In the following letter sequence, each group follows a specific pattern. Identify the group of letters that should come next in t…

Reasoning & General Intelligence ·Previously asked in SSC CGL 2025

View the full solved paper: SSC CGL 2025 Tier II (19 Jan 2026)

Question

In the following letter sequence, each group follows a specific pattern. Identify the group of letters that should come next in the sequence. ZYA, WVD, TSG, QPJ,?

  1. A. OMN
  2. B. MON
  3. C. NMM (Correct answer)
  4. D. MNM

Correct Answer

Option C — NMM

Detailed Solution & Explanation

The correct answer is NMM.

Key Points

  • Read the clusters column by column:
    • 1st letters: Z(26), W(23), T(20), Q(17) — each −3 → next is 14 = N
    • 2nd letters: Y(25), V(22), S(19), P(16) — each −3 → next is 13 = M
    • 3rd letters: A(1), D(4), G(7), J(10) — each +3 → next is 13 = M
  • Combining gives N M M.

Additional Information

  • Two columns move backwards while the third moves forwards — mixed directions are common, so test each position independently rather than looking for one rule.
  • Note the first two letters of each cluster are consecutive in reverse (ZY, WV, TS, QP), a secondary pattern that confirms the answer.
  • The second and third letters coincidentally land on the same letter M here, so a repeated letter in the answer is not a sign of error.
  • Options MON, MNM and OMN use the same letters rearranged, so verify the order position by position before choosing.

Topics covered: Series Letter Series