What should come in place of the question mark (?) in the given series?
138, 137, 140, 139, 142, ?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 141.
Given series: 138, 137, 140, 139, 142, ?
138 - 1 = 137; 137 + 3 = 140; 140 - 1 = 139; 139 + 3 = 142; 142 - 1 = 141