1.5 Venn Diagrams

Three overlapping sets create 7 regions plus the outside.

Given:

• A = {1, 2, 3, 4, 5}
• B = {3, 4, 5, 6, 7}
• C = {1, 4, 5, 7, 8}

Key Operations:

• A ∩ B ∩ C = {4, 5} — in all three
• A ∩ B = {3, 4, 5} — shared by A and B
• A ∩ C = {1, 4, 5} — shared by A and C
• B ∩ C = {4, 5, 7} — shared by B and C
• A ∪ B ∪ C = {1, 2, 3, 4, 5, 6, 7, 8}

Tap to place each number in its correct region.