Question

For two sets $A=\{q,w,e,r,t,y\};B=\{r,t,y,u,i\},$ match the following.

• A. $\{q,w,e\}$
• B. $\{u,i\}$
• C. $\{r,t,y\}$
• D. $\{i,q,w,e,r,t,y,u\}$

Answer 1

Given two sets $A=\{q,w,e,r,t,y\}\&B=\{r,t,y,u,i\}$
Now, let's look at the operations one by one.
$1.A\cup B$ is set of all elements of $A\&B$
$\Rightarrow A\cup B=\{q,w,e,r,t,y,u,i\}$

$2.A\cap B$ is set of all common elements of $A\&B$
$\Rightarrow A\cap B=\{r,t,y\}$

$3.A-B$ is set of all elements in $A$ but not in $B$
$\Rightarrow A-B=\{q,w,e\}$

$4.B-A$ is set of all elements in $B$ but not in $A$
$\Rightarrow B-A=\{u,i\}$