Answer
Diverges
Work Step by Step
Here, $r=-2, a=1$
The Nth partial sum of a geometric series can be found as:
$s_n=\dfrac{a(1-r^n)}{1-r}$
The sum of a geometric series can be found as:
$S=\dfrac{a}{1-r}$
This is a geometric series with$|r| \gt 1$, so it diverges.
