Section outline

  • 🎯 Objective:
    By the end of this lesson, you will learn how to solve problems involving three sets using Venn diagrams. You’ll explore how to label regions, find unknown values, and use set operations like union, intersection, and complement in more complex scenarios.

    A 3-set Venn diagram is a visual tool used to represent relationships between three different sets. It consists of three overlapping circles, where:

    • Each circle represents a different set (e.g., A, B, and C).

    • The overlapping regions between the circles show elements that are shared between the sets.

    • The central area where all three circles overlap represents elements that belong to all three sets.

    • The space outside all circles represents the universal set — everything else not included in A, B, or C.

    Watch the video below to get a visual intro to three-set Venn diagrams with a simple example.