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What will come in place of question mark (?) in the following number series?

5, 7, 10, ?, 22, 33, 46


1. 12
2. 16
3. 15
4. 18
5. 20

1 Answer

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Correct Answer - Option 3 : 15

The given series is the addition of prime numbers.

5 + 2 = 7

7 + 3 = 10

10 + 5 = 15

15 + 7 = 22

22 + 11 = 33

33 + 13 = 46

∴ The value of ? is 15.

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