66, 36, 18, - Number Series - Series Completion - Verbal Reasoning question

In following question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces. - 66, 36, 18,

A. 3

B. 6

C. 8

D. 9

E. None of the above

Answer: C. 8

Each number is the series is the product of the digit of the preceding number.
Thus, 6 * 6 = 36,
3 * 6 = 18 and so on.
.'. Missing number = 1 * 8 = 8.

Posted in: Number Series - Series Completion - Verbal Reasoning