Find the next number in the given sequence?

11, 17, 39, 85, ?

A) 133	B) 143
C) 153	D) 163

Answer: D) 163

Explanation:

Her the given number series is 11, 17, 39, 85, ?

$11 11 + (3^{2} - 3) = 17 17 + (5^{2} - 3) = 39 39 + (7^{2} - 3) = 85 85 + (9^{2} - 3) = 163$

Hence, the next number in the given sequence is 163.

Subject: Number Series
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