What should come in place of the question mark (?) in the given series?
​8, 13, 20, 29, 40, ?

Given Series:
8, 13, 20, 29, 40, ?
Logic:
The series follows the pattern of +5, +7, +9, +11, +13…
8 + 5 = 13
13 + 7 = 20
20 + 9 = 29
29 + 11 = 40
Simiarly,
40 + 13 = 53
So, missing number is 53.

Thus, correct option is (c).