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1. 1-1-2-3-5-8-13 what number should come next in the series?
- A. 15
- B. 15
- C. 15
- D. 15
Answer: Option B
Explanation:
1 + 1 = 2
1 + 2 = 3
2 + 3 = 5
3 + 5 = 8
5 + 8 = 13
8 + 13 = 21
So, the next number in the series should be 21.
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