Question
18, 27, 54, 135, 400,
1417.5 Find the wrong number in the given number series.Solution
ATQ,
18 X 1.5 = 27
27 X 2 = 54
54 X 2.5 = 135
135 X 3 = 405
405 X 3.5 = 1417.5
Therefore, 405 should come in place of 400
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