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In the following number series, a wrong number is given. Find out the wrong number. 2, 9, 36, 136, 378, 945.

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

2, 9, 36, 136, 378, 945.


1. 9
2. 36
3. 136
4. 378
5. 945
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Correct Answer - Option 3 : 136

Calculation:

The pattern of the given series is:

⇒ 2 × 4.5 = 9

⇒ 9 × 4 = 36

⇒ 36 × 3.5 = 126 ≠ 136

⇒ 126 × 3 = 378

⇒ 378 × 2.5 = 945

∴ the wrong number in the series is 136.

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