What should come in place of '?' in the given series?
41, 43, 47, 53, 61, ?

Given:

41, 43, 47, 53, 61, ?

Logic:+2, +4, +6 ...

41 + 2 = 43
43 + 4 = 47
47 + 6 = 53
53 + 8 = 61
Now, following the pattern, we add 10 to the last number:
61 + 10 = 71
So, the next number in the series is 71.
Thus, the correct answer is (C) 71.