Question

determinati multimile a si b stiind ca sunt indeplinite simultan conditiile
A)AreunitB={a b c d e f}
B)AintersectatB={c d}
C)Aintersectat{e f}=multimea vida
D){a b}intersectatB NU APARTINE MULTIMEI VIDE

Answer 1

A∪B={a, b, c, d, e, f} 
A∩B={c, d} 
A∩{e, f}=Ф 
{a. b}∩B nu apartine multimii vide

A={c, d}
B={a, b, c, d}