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Daca multimea A are 4 elemente multimea B are 6 elemente si A intersectat cu B are doua elemente deterninati nr elementelor multimii AUB

Răspuns :

AUB=8 elemente
........
ex:
A={2,4,5,6}
B={5,3,1,2,7,9}
A intersectie B={2,5}
AUB={1,2,3,4,5,6,7,9}   ----sunt 8 elemente