Question
97 106 121 138 157
180 In each of these questions a number series is given. In each series only one number is wrong. Find the wrong number.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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