Series Completion - Verbal and Reasoning

Directions to SolveChoose the correct alternative that will continue the same pattern and replace the question mark in the given series.
Q1:

1, 2, 3, 6, 9, 18, ?, 54

A 18

B 27

C 36

D 81

ANS:B - 27

Explanation: The pattern is x 2, x 3/2, x 2, x 3/2, x 2,..... So, missing term = 18 x 3/2 = 27.