Which of the following numbers will replace the question mark (?) in the given series?
57, 62, 45, ?, 33, 86
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 74.
The series follows this pattern:
1. 57, 45, 33
57 - 12 = 45, 45 - 12 = 33
2. 62, ?, 86
62 + 12 = 74, 74 + 12 = 86