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Question

What comes next: 10, 17, 26, 37, 50, ?

This question was previously asked in
SSC CGL 2025 Tier 1 Question Paper (25-Sep-2025) (Shift 3)
The correct answer is
65

Number Sequence Pattern Analysis

The problem asks to find the next number in the given sequence: 10, 17, 26, 37, 50, ? To solve this, we need to identify the underlying pattern.

Identifying the Pattern

We examine the differences between consecutive terms in the sequence:

  • Difference between 17 and 10: $17 - 10 = 7$
  • Difference between 26 and 17: $26 - 17 = 9$
  • Difference between 37 and 26: $37 - 26 = 11$
  • Difference between 50 and 37: $50 - 37 = 13$

Observe that the differences themselves form a sequence: 7, 9, 11, 13. This is a sequence of consecutive odd integers, increasing by 2 each time.

Calculating the Next Term

Following the pattern of differences, the next difference should be $13 + 2 = 15$.

To find the next term in the original sequence, we add this next difference (15) to the last known term (50):

$50 + 15 = 65$

Thus, the next number in the sequence is 65.

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