Which of the following numbers will replace the question mark (?) in the given series?
23, 27, 35, ?, 63, 83, 107
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 47.
The series follows this pattern:
23 + 4 = 27, 27 + 8 = 35, 35 + 12 = 47, 47 + 16 = 63, 63 + 20 = 83, 83 + 24 = 107