Question

In each of these questions a number series is given. In each series only one number is wrong. Find the wrong number.

97 106 121 138 157 180

A 121 Correct Answer Incorrect Answer
B 97 Correct Answer Incorrect Answer
C 138 Correct Answer Incorrect Answer
D 157 Correct Answer Incorrect Answer
E 106 Correct Answer Incorrect Answer

Solution

97 + 11 = 108 108 + 13 = 121 121 + 17 = 138 138 + 19 = = 157 157 + 23 = 180 Hence there should be 106 in place of 108.

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