Question
Find the wrong number in the given number series.
12, 21, 5, 38, 2, 71Solution
ATQ,
12 + (3)² = 21
21 - (4)² = 5
5 + (5)² = 30
30 - (6)² = -6
-6 + (7)² = 43
So, 30 should be in place of 38.
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