Question

$A=\{2,4,6,8\}$ and $B=\{6,8,10,12\}$. Find $A\cap B$

Answer 1

Given: $A=\{2,4,6,8\},B=\{6,8,10,12\}$
$A\cap B=\{2,4,6,8\}\cap \{6,8,10,12\}$
$6,8$ are common elements in $A$ and $B$.
$\therefore A\cap B=\{6,8\}$