Find the missing term in the following series.

1)

6, 11, 21, 36, 56, ?


A) 91

B) 42

C) 81

D) 51

Answer:

Option C

Explanation:

The pattern is + 5, + 10, + 15, + 20, ..... So, missing term = 56 + 25 = 81.

Hence the answer is (c).