Algebra Examples

$A = (0, 1, 2)$ , $B = (0, 1, 2, 10)$

Step 1

$A$ is a subset of $B$ and $A$ is not equal to $B$ , which is the definition of a proper subset..

$A = (0, 1, 2)$ is a proper subset of $B = (0, 1, 2, 10)$