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Which of the following numbers will replace the question mark (?) in the given series?27, 54, 42, 84, 72, 144, ?
Question

Which of the following numbers will replace the question mark (?) in the given series?
27, 54, 42, 84, 72, 144, ?

A.

132

B.

156

C.

138

D.

152

Correct option is A

Given:
27, 54, 42, 84, 72, 144, ?
Given series contains two series.
Series 1: 27, 42, 72, ?
Logic: +15, +30, +60 pattern follows
27+15=42
42+30=72
72+60=132
Series 2: 54, 84, 144
Logic: +30, +60 pattern follows
54+30=84
84+60=144
Thus, correct option is (a).

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