Răspuns :
Salut!
A={3,4,5}
B={5,6,7,8}
C={2,4,8}
K={1,3,5,7}
A∪B={3,4,5,6,7,8}
A∪K={1,3,4,5,7}
B∪C={2,4,5,6,7,8}
C∪K={1,2,3,4,5,7,8}
Succes!
AUB={3,4,5,6,7,8}
AUK={1,3,4,5,7}
BUC={2,4,5,6,7,8}
CUK={1,2,3,4,5,7,8}
Salut!
A={3,4,5}
B={5,6,7,8}
C={2,4,8}
K={1,3,5,7}
A∪B={3,4,5,6,7,8}
A∪K={1,3,4,5,7}
B∪C={2,4,5,6,7,8}
C∪K={1,2,3,4,5,7,8}
Succes!
AUB={3,4,5,6,7,8}
AUK={1,3,4,5,7}
BUC={2,4,5,6,7,8}
CUK={1,2,3,4,5,7,8}