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What should come in place of question mark ‘?’ in the following number series? 11, 29, 83, 245, 731, ?

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

11, 29, 83, 245, 731, ?
1). 2187
2). 2189
3). 2180
4). 2184


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1 answers

2 vote
Answered by on | Votes 2 |

The pattern of given series is :

⇒ 11 × 3 – 4 = 29

⇒ 29 × 3 – 4 = 83

⇒ 83 × 3 – 4 = 245

⇒ 245 × 3 – 4 = 731

⇒ 731 × 3 – 4 = 2189 = ?

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