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In the following number series, a wrong number is given. Find out the wrong number.

24, 31, 17, 38, 20, 45


1. 31
2. 38
3. 45
4. 20
5. 17

1 Answer

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Best answer
Correct Answer - Option 4 : 20

Given:

24, 31, 17, 38, 20, 45

Calculation:

The series follows the following pattern,

24 + 7 = 31

31 - 14 = 17

17 + 21 = 38

38 - 28 = 10 ≠ 20

10 + 35 = 45

Since 10 will come in place of 20.

∴ The required wrong number will be 20.

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