Select the number that can replace the question mark (?) in the following series.
0, 1, 1, 3, 2, ?, 3, 13, 4, 21
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e 7.
| Understanding |
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Given series:0, 1, 1, 3, 2, ?, 3, 13, 4, 21 The given series is alternate with two series: 1) 0, 1, 2, ... In this series, the logic is +1. 2) 1, 3, 7, .... In this series, the logic is +2, +4, +6 and so on. Thus the missing term is 7. |