Find the next number: 9, 12, 17, 24, ?
- A.31
- B.35
- C.37
- D.33 ✓
Explanation: The differences are 3, 5, 7 — increasing by 2 each time. The next difference is 9, so 24 + 9 = 33.
Class 6 IMO Mathematics Olympiad practice · Patterns & Sequences · Number & Letter Sequences
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