Question

1.Determinati multimile stiind ca indeplinesc simultan conditiile:
a) AuB={1,2,3,4,5,6,7}
b) A intersectat cu B={3,5}
c) A-B ={1,6}

2.Determinati multimile A si B, stiind ca indeplinesc simultan conditiile:
a) AuB={a,b,c,d,e,f}
b) A intersectat cu B={a,e}
c) B-A={d,f}

3.Determinati multimile A si B stiind ca indeplinesc simultan conditiile:
a)AuB={x e N| x mai mic sau egal cu 8}
c) Au{2,5,6}={0,1,2,3,4,5,6,7}
b) A intersectat cu B={2,3,5}
d) Bu{0,2,4}={0,2,4,6,8}

Answer 1

1. A(1,3,5,6) ;B(2,3,4,5,7)
2. A(a,b,c,e) ; B(a,d,e,f)
3. A(0,1,2,3,4,5,6,7) ; B(2,3,5,6,8)