Question

If a1=1. And r=1/5 find a8

Answer 1

Answer:

a₈ = $\frac{1}{78125}$

Step-by-step explanation:

The nth term of a geometric sequence is

$a_{n}$ = a₁$(r)^{n-1}$

Here a₁ = 1 and r = $\frac{1}{5}$ , then

a₈ = 1 × $(\frac{1}{5}) ^{7}$ = 1 × $\frac{1}{78125}$ = $\frac{1}{78125}$