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:

4, 12, 36, 108, ?

A 144

B 216

C 304

D 324

ANS:D - 324

Explanation: The pattern is x 3. So, missing term = 108 x 3 = 324.