What should come in place of the question mark (?) in the given series?
5, 8, 17, 44, 125, ?

Given: 5, 8, 17, 44, 125, ?

The difference between consecutive terms:

8 − 5 = 3

17 − 8 = 9

44 − 17 = 27

125 − 44 = 81

The pattern in these differences:
3, 9, 27, 81
This is a geometric progression where each number is multiplied by 3 to get the next:

3 × 3 = 9

9 × 3 = 27

27 × 3 = 81

81 × 3 = 243

Add the next difference (243) to the last number in the series:

125 + 243 = 368

So, the missing term is 368.

Thus, correct option is (d).