Question
Find the wrong number in the given number series.
72, 86, 98, 116, 140, 172Solution
ATQ, 72 + 12 = 84 84 + 14 = 98 98 + 18 = 116 116 + 24 = 140 140 + 32 = 172 So, 84 should come in place of 86
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