Venn-Vault

3-Set Problem Solver

Set A n(A)

Set B n(B)

Set C n(C)

A and B n(A ∩ B)

B and C n(B ∩ C)

C and A n(C ∩ A)

All Three n(A ∩ B ∩ C)

Universal Total Total People

Exactly One

Exactly Two

At Least One

None

The diagram auto-fills the "Only" regions.