Find the wrong number in the following series.
133, 119, 107, 91, 77

Correct option is D

Given series: 133, 119, 107, 91, 77
Find the pattern by calculating the differences between consecutive terms:
133 - 119 = 14
119 - 107 = 12
107 - 91 = 16
91 - 77 = 14
The differences are 14, 12, 16, and 14, which do not follow a consistent pattern.
If we replace 107 with 105, the differences would be:
133 - 119 = 14
119 - 105 = 14
105 - 91 = 14
91 - 77 = 14
Now, the differences are consistent, indicating that 107 is the wrong number in the series.
Therefore, the correct answer is: (d) 107.