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Question

What comes next in the series?
D, I, N, S, ?

This question was previously asked in
SSC CGL 2025 Tier 1 Question Paper (25-Sep-2025) (Shift 3)
The correct answer is
X

Letter Series Pattern Analysis

The question presents a letter series: D, I, N, S, ? and asks for the next term.

Identifying the Pattern

To find the pattern, we convert the letters to their corresponding positions in the English alphabet:

  • D is the 4th letter.
  • I is the 9th letter.
  • N is the 14th letter.
  • S is the 19th letter.

Now, let's calculate the difference between the positions of consecutive letters:

  • Position of I - Position of D = $9 - 4 = 5$
  • Position of N - Position of I = $14 - 9 = 5$
  • Position of S - Position of N = $19 - 14 = 5$

The pattern is that each subsequent letter's position in the alphabet increases by 5.

Determining the Next Term

The position of the last given letter, S, is 19.

To find the position of the next letter, we add 5 to the position of S:

Next letter's position = $19 + 5 = 24$.

The 24th letter in the English alphabet is X.

Conclusion

Therefore, the next term in the series D, I, N, S, ? is X.

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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. Select the letter-cluster from among the given options that can replace the question mark (?) in the following series:
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    A, C, F, J, O, ?

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    LM, KN, JO, IP, ?

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


Important Questions from Letter Based Series

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

    M N _ O J K M _ Q O J K _ N Q _ J K M N Q O _ K M N

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

    B _ E N B _ C E N B B C _ N B B C E _ B _ C

  3. Select the option that is related to the fifth letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster and the fourth letter-cluster is related to the third letter-cluster.

    MSD: NHW :: OAE : LZV :: NIP : ?

  4. 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

  5. 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

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