Find out the wrong number in the following series:
5, 10, 17, 26, 36, 50, 65

Question: Find out the wrong number in the following series:
5, 10, 17, 26, 36, 50, 65

Solution:
Given,
The following series: 5, 10, 17, 26, 36, 50, 65

The difference between consecutive numbers of the given series are respectively = 5, 7, 9, 11, 13 and 15.
Therefore, 26 + 11 = 37
But in this question it is given 36.

So 36 is wrong number.