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

Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
ACE EIM IOU MUC ?

This question was previously asked in
SSC CGL 2025 Tier 2 Paper 1 Question Paper (19-Jan-2026)
The correct answer is

QAK

The first letter of each cluster advances by +4: A, E, I, M, Q.

Within each cluster, the gap between successive letters grows by +2:

ACE: gap = +2, +2. EIM: gap = +4, +4. IOU: gap = +6, +6. MUC: gap = +8, +8 (with alphabet wrap).

So the next cluster starts at Q and uses gap = +10, +10: Q → A (wrap) → K.

Hence, the answer is QAK.

Was this answer helpful?

Similar Questions

  1. Select the related word/letters/numbers from the given alternatives:
    Money : Poverty : : Education : ?

  2. Select the related word/letters/numbers from the given alternatives:
    BEF : GJK : : LOP : ?

  3. Select the related word/letters/numbers from the given alternatives:
    8 : 32 : : ? : 108

  4. For the following questions, find the odd word/letters/number from the given alternatives:

  5. For the following questions, find the odd word/letters/number from the given alternatives:

  6. For the following questions, find the odd word/letters/number from the given alternatives:

  7. Arrange the following words as per order in the dictionary:

    1. Preach

    2. Praise

    3. Precedent

    4. Precept

    5. Precede

  8. Select the related word/letters/numbers from the given alternatives:
    Length : Meter :: Power : ?

  9. Select the related word/letters/numbers from the given alternatives:
    ZKY : TWUS :: RPNL : ?

  10. Select the related word/letters/numbers from the given alternatives:
    42 : 20 :: 64 : ?


Important Questions from Letter Based Series

  1. Select the related word/letters/numbers from the given alternatives:
    Money : Poverty : : Education : ?

  2. Select the related word/letters/numbers from the given alternatives:
    BEF : GJK : : LOP : ?

  3. Select the related word/letters/numbers from the given alternatives:
    8 : 32 : : ? : 108

  4. For the following questions, find the odd word/letters/number from the given alternatives:

  5. For the following questions, find the odd word/letters/number from the given alternatives:

Need Expert Advice?
Upcoming Exams
SSC CGL
September 30, 2026
UPSSSC PET
October 23, 2026
Test Series
SSC CGL img
SSC
SSC CGL (Tier I + Tier II) 2026 Mock Test Series - Latest Pattern
2503 Tests 6 Tests Free
5372 Attempts
4.2(868)
English, Hindi

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