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.

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

• A. 4370
• B. 4374
• C. 7443
• D. 7434

Answer 1

The correct option is B 4374

Clearly, 2 * 3 = 6, 6 * 3 = 18, 18 * 3 =54,...
So ,the series is a G.P. in which a = 2 and r = 3.
$\therefore$8th term = $a{r}^{(8-1)}=a{r}^7=2\ast 3^7=(2\ast 2187)=4374$.