In following number series, two terms have been put within brackets. Choose the appropriate option - 3, 6, 29, 258, ? ......

Answer: B. 3127

The pattern is 2 + n

So, 2 + 11 = 3
2 + 22 = 6,
2 + 33 = 29,
2 + 44 = 258,

 .'. Next Number = 2 + 55 = 2 + 3125 = 3127.

Answer : B