Question

Determinati multimile A si B, stiind ca sunt indeplinite simultan conditiile:
a) AUB={1,2,3,4,5,6,7}
b) A(U in jos)B= {3,5}
c) A-B/ {1,6}

Answer 1

a) AUB={1,2,3,4,5,6,7}

b) A∩B= {3,5}

c) A-B/ {1,6}

=>A={1,3,5,6},  pe langa 3 si 5 care sunt si in B,  in A mai avem 1 si 6

B={2,3,4,5,7}