$\left\{2, 6, 10, 14\right\}$ and $\left\{3, 7, 11, 15\right\}$ are disjoint sets.

The shaded region in the given figure shows _____

If 
$$\begin{gathered} A=\left\{x:2x+1,x\in N,x\le 5\right\} \\ B=\left\{x:x is a composite number,x\le 12\right\} \end{gathered}$$
Then show that,$\left(A\cup B\right)-\left(A\cap B\right)=\left(A-B\right)\cup \left(B-A\right)$

Find $A\cap B$ and display it with Venn diagram.

$A=\left\{x:x is a perfect square,x<50,x\in N\right\}$
$B=\left\{x:x=8m+1, where m\in W,x<50,x\in N\right\}$

The following Venn diagram indicates