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What should come in place of the question mark (?) in the following number series? 6, 7, 16, 51, ?, 1045 

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

6, 7, 16, 51, ?, 1045 


1). 206
2). 209
3). 208
4). 212


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Answered by on | Votes 1 |

The pattern of given series is:

→ 6 × 1 + 1 = 7,

→ 7 × 2 + 2  = 16,

→ 16 × 3 + 3 = 48 + 3 = 51,

→ 51 × 4 + 4 = 204 + 4 = 208,

→ 208 ×? 5 + 5  = 1040 + 5 = 1045,

⇒ ? = 208

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