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What should come in place of question mark ‘?’ in the following number series? 10, 17, 27, 40, ? 

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

10, 17, 27, 40, ? 


1). 58
2). 56
3). 54
4). 52


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1 answers

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Answered by on | Votes 0 |

⇒ 2 × 1.5 + 7 = 10

⇒ 5 × 2 + 7 = 17

⇒ 8 × 2.5 + 7 = 27

⇒ 11 × 3 + 7 = 40

⇒ 14 × 3.5 + 7 = 56

∴ ? = 56

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