Set Game: A & B

Fast classroom randomizer to teach A∩B (both), A∪B (A or B), and complements A′, B′ (not in A/B).

Leave empty to auto‑fill 25 names. Only first names are used.

A∩B

in both groups

A∪B

in A or B (or both)

A′

not in A

B′

not in B
A
B

A

    B

      A ∩ B

        A ∪ B

          A′

            B′