Which of the following numbers will replace the question mark (?) in the given series?
4, 9, 17, 30, 50, 81, 125, ?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 186
4, 9, 17, 30, 50, 81, 125, ?
The logic used here is:
4 + 5 = 9
9 + 8 = 17; (5 + 3) = 8
17 + 13 = 30; (8 + 5) = 13
30 + 20 = 50; (13 + 7) = 20
50 + 31 = 81; (20 + 11) = 31
81 + 44 = 125; (31 + 13) = 44
125 + 61 = 186; (44 + 17) = 61
Hence, the correct answer is 186.