Which of the following numbers will replace the question mark (?) in the given series?
81, 65, 50, ?, 23, 11
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 36.
Given series: 81, 65, 50, ?, 23, 11
81 - 16 = 65; 65 - 15 = 50; 50 - 14 = 36; 36 - 13 = 23; 23 - 12 = 11