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

Question: In the series 2, 6, 18, 54, …… what will be the 8th term ?
[A].

4370

[B].

4374

[C].

7443

[D].

7434

Answer: Option B

Explanation:

Clearly, 2 x 3 = 6, 6 x 3 = 18, 18 x 3 = 54,…..

So, the series is a G.P. in which a = 2, r = 3.

Therefore 8th term = ar8-1 = ar7 = 2 x 37 = (2 x 2187) = 4374.