Question

The 5th and 7th term of GP are 2÷27 and 2÷243 respectively find the 3rd term

Answer 1

given :5th term =2/27
$= a {r}^{4}$
7th term =2/243
$a {r}^{6}$
7th term ÷5th term =r ×r =1/9
r =1/3
a =6
so 3 Rd term is 2/3