1. ## infinite series!

18,2,2/9...............
pls guys the equation above represent a series, have tried to obtain the nth term but no avail, can any help me here.

appreciate!

2. ## Re: infinite series!

Originally Posted by lawochekel
18,2,2/9...............
pls guys the equation above represent a series, have tried to obtain the nth term but no avail, can any help me here.

appreciate!
$a_n=2 \cdot 9^{(2-n)}$