Question

A GP like 3,6,12.....find whether will is a terms of the series or not.

Answer 1

Step-by-step explanation:

The GP has terms 3, 6, 12 and so on till 768.

We want to know which term is 768.

Well, a = 3 and r = 2

Now ar^(n-1) = 768

or r^(n-1) = 768/3 = 256 = 2^(n-1)

But 256 = 2^8 which in same as 2^(n-1).

Hence n = 8 and so the 8th term of the GP is 768