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, 1, 2, 6, 24, ?, 720

A 100

B 104

C 108

D 120

ANS:D - 120

Explanation: The pattern is x 1, x 2, x 3, x 4,..... So, missing term = 24 x 5 = 120.