Which number will replace the question mark (?) in the following series?
3, 7, 16, 35, ?, 153
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 74.
3 × 2 + 1 = 7, 7 × 2 + 2 = 16, 16 × 2 + 3 = 35, 35 × 2 + 4 = 74, 74 × 2 + 5 = 153
Hence, the correct answer is 74.