Explain the concept of the Venn diagram and its main use cases.

Venn diagrams are graphical representations of sets and their relationships using overlapping circles or other shapes. Each shape represents a set, and overlaps show common elements between sets.

Main use cases:

• In mathematics, for visualizing intersections, unions, and differences of sets.
• In programming, for analyzing data overlaps, such as common users between groups.
• In logic, for illustrating logical operations (AND, OR, NOT).
• In business and marketing, for analyzing overlaps of target audiences.

Example: if set A is users who like coffee, and set B is users who like tea, then A ∩ B is users who like both coffee and tea.

Venn diagrams help visually understand and analyze relationships between different data sets.