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What should come in the place of question mark '?' in the following number series ?

– 14, – 13, – 5, 22, ?, 211


1. 76
2. 66
3. 56
4. 64
5. 86

1 Answer

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Correct Answer - Option 5 : 86

Considering the above series,

– 14, – 13, ​– 5, 22, ?, 211

The logic of the series can be explained as:

– 14 + 13 = – 13

– 13 + 23 = – 5

– 5 + 33 = 22

By observing the pattern, we can write

⇒ 22 + 43 = ?

⇒ ? = 86

⇒ 86 + 53 = 211

∴ The value of ? is 86. 

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