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Find the wrong number in the following series. 1, 4, 11, 26, 60, 120

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Find the wrong number in the following series.

1, 4, 11, 26, 60, 120


1. 120
2. 26
3. 11
4. 4
5. 60
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1 Answer

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Correct Answer - Option 5 : 60

Calculation:

Considering the above series,

1, 4, 11, 26, 60, 120

The logic of the series can be explained as,

1 × 2 + 2 = 4

4 × 2 + 3 = 11

11 × 2 + 4 = 26

26 × 2 + 5 = 57

57 × 2 + 6 = 120

∴ The wrong number is 60

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