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What should come in place of ‘?’ in the following number series? 2, 3, 10, 15, 26, 35, 50, ?

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

2, 3, 10, 15, 26, 35, 50, ?


1). 65
2). 69
3). 63
4). 86


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1 answers

2 vote
Answered by on | Votes 2 |

The pattern of the given number series is as following:

⇒ 12 + 1 = 2,

⇒ 22 – 1 = 3,

⇒ 32 + 1 = 10,

⇒ 42 – 1 = 15,

⇒ 52 + 1 = 26,

⇒ 62 – 1 = 35,

⇒ 72 + 1 = 50,

⇒  82 – 1 = 63

Hence, the required number in place of question mark is 63.

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