What will come in place of question mark (?) in the following number series.?
The difference between consecutive terms of the number series is increasing by one.
For example, 13-11 = 2
16-13 = 3
20-16 = 4
So, the number next in series is 20+5 = 25. As it is not in the given options, the correct answer is option (e)
Create a FREE account and get: