Question

Fie multimile: A={1,2,3}, B={2,3,4,5}. Calculati: A U B; A INTERSECTAT CU B; A\B; B\ A

Answer 1

A U B apartine {1,2,3,4,5}
A INTERSECTAT CU B apartine {1,4,5}
A\B apartine {1}
B\A apartine {4,5}