What should come in place of the question mark (?) in the given series?
7 17 25 53 61 ?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 125.
Given series: 7 17 25 53 61 ?
7 × 2 + 3 = 17, 17 + 8 = 25, 25 × 2 + 3 = 53, 53 + 8 = 61, 61 × 2 + 3 = 125