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a fost răspuns

Calculati card A∩B, daca:
a) card A=33, card B=16, card A∪B=40
b) card A=26, card B=15, card A∪B=27
c) card A=14, card B=23, card A∪B=37

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Răspuns :

Mikkka

Card A ∩ B = card A + Card B - Card A ∪ B

a) Card A ∩ B = 33+16-40 =9

b) Card A ∩ B = 26+15-27= 14

c) Card A ∩ B = 14+23-37= 0