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Question

What comes next? 

B25, Y2, C24, X3, ?

This question was previously asked in
SSC CGL 2025 Tier 1 Question Paper (25-Sep-2025) (Shift 3)
The correct answer is
D23

To solve this logical reasoning sequence, let's analyze the given series: B25, Y2, C24, X3, ?

Step 1: Breaking Down the Series

  • B25: The letter is 'B', and the number is 25.
  • Y2: The letter is 'Y', and the number is 2.
  • C24: The letter is 'C', and the number is 24.
  • X3: The letter is 'X', and the number is 3.

Step 2: Analyzing Patterns in Letters

  • Observe the pattern in the sequence of letters: B, Y, C, X...
  • B and C are consecutive letters in the alphabet (increment of 1), and similarly, Y and X are consecutive in reverse order (decrement of 1).
  • The pattern alternates: +1, -1, +1,... Therefore, after C, the next letter should be B+2 (forward movement), meaning D.

Step 3: Analyzing Patterns in Numbers

  • The numbers are alternating between decreasing and increasing: 25 down to 2, then 24 down to 3.
  • The pattern shows: 25-1=24, 2+1=3,.. implying: 24-1=23.

Step 4: Combining Both Patterns

  • According to the patterns determined, the next combination should be: D23.

Conclusion

The correct option that fits the observed pattern is D23.

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Similar Questions

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  1. What should come in place of the question mark (?) in the given series based on the English alphabetical order?
    DFA, HJE, LNI, PRM, ?

  2. What should come in place of the question mark (?) in the given series based on the English alphabetical order?
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  3. Which letter-cluster will replace the question mark (?) to complete the given series?
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  4. Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
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  5. What should come in place of the question mark (?) in the given series based on the English alphabetical order?

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