Which of the following numbers will replace the question mark (?) in the given series?
69, 65, 67, 63, ?, 61
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 65.
Given series: 69, 65, 67, 63, ?, 61
The series follows this pattern:
69 - 4 = 65; 65 + 2 = 67; 67 - 4 = 63; 63 + 2 = 65; 65 - 4 = 61