One term in the number series is wrong. Find out the wrong term.
6, 15, 35, 77, 165, 221

A. 35

B. 77

C. 165

D. 15

Answer: Option C

Solution(By Examveda Team)

The terms of the series are products of two consecutive prime numbers i.e. (2 x 3),
(3 x 5), (5 x 7), (7 x 11),.....
So, 165 is wrong and must be replaced by (11 x 13) i.e. 143.