Instructions

In the following number series only one number is wrong. Find out the wrong number.

Question 126

11, 18, 29, 42, 59, 80, 101

Solution

Prime numbers starting from 7 are added.

11 + 7 = 18

18 + 11 = 29

29 + 13 = 42

42 + 17 = 59

59 + 19 = 78

78 + 23 = 101

Hence, the number which is wrong is 80, as it is not in the options given, the correct answer is None of the above

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