Number Series · Question 13 · Hard
Find the next number in the series: 2, 5, 4, 10, 8, 20, 16, ?
- 25
- 30
- 40
- 32
Answer and explanation
Answer: C. 40
Explanation: Two series alternate: 2, 4, 8, 16 (doubling) at odd places and 5, 10, 20 (doubling) at even places. The missing term is at an even place: 20 × 2 = 40.
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