Question

If fifth term of G.P. is 48 and common ratio is 2, then the first term is?

Answer 1

Answer:

First term=3

Step-by-step explanation:

Given:

T(5)=48

We know:

T(n)=$ar^{n-1}$

Therefore;

⇒(a)(2)⁵⁻¹=48

⇒a(2)⁴=48

⇒a=48/16

⇒a=3