V a rog ma ajutatiiiiii?
1) Determinati elementele multimilor A si B stiind ca :
AuB={1,2,3,4,5,6,7,8,}
A/B={2,4,5}
B/A={1,8}
2) Gasiti numarul natural x si multimea A stiind ca:
An{2,3,4,5,x}={3,5,7}
Ac{2,3,5,7}