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Question

What comes next in the series? 

A, C, F, J, O, ?

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

This question requires identifying the pattern in the given alphabet series and finding the next term.

Alphabet Series Pattern Analysis

The series is: A, C, F, J, O, ?

Let's examine the gaps (number of letters skipped) between consecutive terms:

  • A to C: Skip 1 letter (B).
  • C to F: Skip 2 letters (D, E).
  • F to J: Skip 3 letters (G, H, I).
  • J to O: Skip 4 letters (K, L, M, N).

Identifying the Progression

The number of skipped letters follows a clear pattern of increasing by 1 each time: 1, 2, 3, 4.

Finding the Next Term

Following the established pattern, the next step requires skipping 5 letters after O.

The letters after O are P, Q, R, S, T. Skipping these 5 letters brings us to the next letter in the series.

Therefore, the next letter is U.

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Similar Questions

  1. Which of the following alternative will fill the blanks?
    _f_hk_gh_fg_k
  2. In the sequence A, C, F, J..., which letter is the $5^{th}$?
  3. Select the letter-cluster from among the given options that can replace the question mark (?) in the following series:
    M C K J H N G M Q D R T ?
  4. What comes next in the series?
    D, I, N, S, ?
  5. Select the letter-cluster from among the given options that can replace the question mark (?) in the following series:
    ACE, BDF, CEG, ?
  6. What comes next? 

    LM, KN, JO, IP, ?

  7. What comes next in the series?
    A, C, F, J, ?
  8. What comes next?
    AG, BH, CI, ?
  9. Which letter trio does NOT follow the ascending order? ABC, BCD, CDE, DFE, EFG

  10. From the given options, select the group of letters that, when inserted in order from left to right into the blanks of the incomplete series, will logically complete it.

    S__KB_FH_BSF_K_SF__B


Important Questions from Letter Based Series

  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.

    Y _ Y _ _ Y _ T _ Y _ Y

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

    Y _ Y _ _ Y _ T _ Y _ Y

  3. Select the triad that follows the same pattern as that followed by the two triads given below. Both triads follow the same pattern. 
    KF-MH-OQ 
    ID-KF-MO

  4. What should come in place of the question mark (?) in the given series based on the English alphabetical order? 
    BIG DKI FMK HOM ?

  5. Observe the following incomplete letter sequence carefully:
    aa_bbc_aa bb_aaac_cc.
    A specific pattern governs the order and repetition of the letters. Choose the option that best fills the blanks (in order) to complete the sequence logically and symmetrically.
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