Question

If $A=\{1,3,9,11,13\}$ and $B=\{1,9,11\}$ then find $A\cup B$ and $A\cap B$.

Answer 1

Given,

$A=\{1,3,9,11,13\}$ and $B=\{1,9,11\}$.

Now,

$A\cup B$

$=\{1,3,9,11,13\}$.

And

$A\cap B$

$=\{1,9,11\}$.