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Sets
Question | Answer |
---|---|
Union of sets properties (4 ) | a) A ⊆ B : A u B = B b) Commutative c) Associative d) If X ∉ A u B , then X ∉ A or B |
Intersection (5) | a) Commutative and associative b) (A u B) n A = A c) (A n B ) u A = A d) (A n B) u C = (A u C) n (A u B) e) ∅ n A = ∅ |
Proper subset | ⊂ ; extra element |
A∩(BUC) | (A∩B) U (A∩C) |
AU(B∩C) | (AUB) ∩ (AUC) |
Demor (AUB)' | A'∩B' |