EduGoog

In "Number Series" question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces

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.

In the Series 2, 6, 18, 54, …, what will be the 8th term ?

Option:
A. 4370
B. 4374
C. 7443
D. 7434
Answer: B . 4374

Justification:

Clearly, 2 * 3 = 6,  6 * 3 = 18,  18 * 3 =54,...
So ,the series is a G.P. in which a = 2 and r = 3.
.'. 8th term = ar(8 - 1) =ar7 = 2 * 37 = (2 * 2187) = 4374.

Next