Which of the following numbers will replace the question mark (?) in the given series? 7, 15, 30, 62, 125, 253, ?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 508
7, 15, 30, 62, 125, 253, ?
The following logic is used:

Hence, 508 is the correct answer.