The $n$-th term of a geometric series with first term $a$ and common ratio $r$ is —

Question

Accepted Answer

$ar^{n - 1}$

Answer

$a + (n - 1)r$

Answer

$ar^{n}$

Answer

$ar^{n + 1}$

The nnn-th term of a geometric series with first term aaa and common ratio rrr is —