Which of the following numbers will replace the question mark (?) in the given series?
134, 129, 122, ?, 102, 89
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 113.
134 - 5 = 129; 129 - 7 = 122; 122 - 9 = 113; 113 - 11 = 102; 102 - 13 = 89