Question

Determinati multimile A si B stiind ca sunt indeplinite simultan conditile :
A/B = {5}, A U (intors) B = {-2,-1}, A U B = {-2,-1,0,+4,+5}

Answer 1

5∈A si 5∉B

-2si -1∈A si ∈B

deci 0 si 4∈B si∉B

atunci

A={5;-2;-1}

si

B={-2;-1;0;4}

as simple as that!!!!