Question
Find the wrong number in the given number series.
30, 39, 23, 47, 12, 61Solution
ATQ,
30 + (3)² = 39
39 - (4)² = 23
23 + (5)² = 48
48 - (6)² = 12
12 + (7)² = 61
So, 48 should be in place of 47.
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