How many terms are there in the G.P. 3, 6, 12, 24, ... , 384 ?

Answer: Option A

Explanation:

Here a = 3 and r =	6	= 2. Let the number of terms be n.
	3

Then, t_n = 384 ar^n-1 = 384

3 x 2^{n - 1} = 384

2^n-1 = 128 = 2⁷

n - 1 = 7

n = 8

Number of terms = 8.