va rog la mate ex 4 si 5 va rog
![Va Rog La Mate Ex 4 Si 5 Va Rog class=](https://ro-static.z-dn.net/files/dca/161c3e95dddbaabadb5f10b5743b0b4c.jpg)
4.
A={1,2,3,4,...,16}
B={1,2,3,4}
A intersectat cu B ={1,2,3,4}
AUB={1,2,3,4,..,16}
A\B={5,6,7,8,...,16}
B\A={O(multimea vida)}