Instructions

In the following number series, a wrong number is given. Identify the wrong number that does not follow the given pattern.

Question 139

15, 28, 43, 60, 79, 101, 123

Solution

Consecutive odd numbers starting from 13 are added

15 $$+ 13$$ = 28

28 $$+ 15$$ = 43

43 $$+ 17$$ = 60

60 $$+ 19$$ = 79

79 $$+ 21$$ = 100 $$\neq$$ 101

100 $$+ 23$$ = 123

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