Question

Se considera multimile A={1,2} , B={1,2,5} ,C={4,6}. Efectuati :
a)(A u B ) Π C
B) A u (B Π C )
C) C \ (A u B )

Π - Acesta este u-ul acela intors *-*

Answer 1

Răspuns:

a) ∅

b) {1,2}

c) {4,6}

Explicație pas cu pas:

a) (A ∪ B) ∩ C = ( {1,2} ∪ {1,2,5} ) ∩ C = {1,2,5} ∩ {4,6} = ∅

b) A ∪ (B ∩ C) = A ∪ ( {1,2,5} ∩ {4,6} ) = {1,2} ∪ ∅ = {1,2}

c) C \ (A ∪ B) = C \ ( {1,2} ∪ {1,2,5} ) = {4,6} \  {1,2,5} = {4,6}