Which number replace the question mark (?) in the following number series?
5, 24, 61, 122, 213, ?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 340.
Given series: 5, 24, 61, 122, 213,?
(2)3 - 3 = 5; (3)3 - 3 = 24; (4)3 - 3 = 61; (5)3 - 3 = 122; (6)3 - 3 = 213; (7)3 - 3 = 340