Question

List all the subsets of the set $\{-1,0,1\}.$

Answer 1

Finding all subsets of given set.
Let $X=\{-1,0,1\}$
Number of elements in $X=3$
So, $n=3$
Number of subsets of $X=2^n=2^3=8$
$\therefore$ Subsets of $X$ are $\varphi ,\{-1\},\left\{0\right\},\left\{1\right\},\{-1,0\},\{0,1\}\{-1,1\},\{-1,0,1\}$