What should come in place of the question mark (?) in the given series?
9 25 53 157 317 ?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 949.
9 × 3 - 2 = 25,
25 × 2 + 3 = 53,
53 × 3 - 2 = 157,
157 × 2 + 3 = 317,
317 × 3 - 2 = 949