Mathematics for IGCSE & O level - Sets (Section 1 - No. 38)
Which of the following is true for all sets A, B and C?
A ∪ B = B ∪ A
A ∩ B = B ∩ A
(A ∪ B) ∪ C = A ∪ (B ∪ C)
A ∩ (B ∪ C) = (A ∩ B) ∪ C
Объяснение
The commutative and associative properties apply to set operations