Question
Find the wrong number in the following series. 163, 126, 78, 52, 23, 10
Solution
ATQ, 13² − 6 = 163 11² + 5 = 126 9² − 4 = 77 7² + 3 = 52 5² − 2 = 23 3² + 1 = 10 Therefore, 77 will come in place of 78
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