1. **Problem statement:** You asked for a Venn diagram example and a drawing. 2. A Venn diagram is used to show relationships between sets. 3. The basic idea is: $$A\cap B$$ means the overlap of sets $A$ and $B$. 4. Another useful rule is: $$n(A\cup B)=n(A)+n(B)-n(A\cap B)$$ 5. Here is a simple example: let set $A$ be circles, and set $B$ be squares. 6. Some elements can be in only $A$, only $B$, or in both sets. 7. The drawing below shows two overlapping circles to represent that idea. 8. If you want, I can also make a labeled Venn diagram for specific numbers or a word problem.