Find the next number in the series. 10,11,15,24,…..
2025
Find the next number in the series. 10,11,15,24,…..
Answer: C. 40 — Concept: In this series, each term is obtained by adding the square of the next positive integer (1², 2², 3², 4², …) to the previous term. This is a rising…
- A.
48
- B.
32
- C.
40
- D.
38
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Correct answer: C
Concept: In this series, each term is obtained by adding the square of the next positive integer (1², 2², 3², 4², …) to the previous term. This is a rising second-difference (sum-of-squares) pattern commonly tested in number series questions.
10 + 12 = 11
11 + 22 = 15
15 + 32 = 24
24 + 42 = 40
Cross-check: the successive differences are 1, 4, 9, 16 — exactly 12, 22, 32, 42 — confirming the pattern holds throughout the series, so the next number is 40.
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