Question

Determinati multimile A si B stiind ca sunt indeplinite simultan conditiile:

a) AUB={x ∈ ℕ | x ≤ 8}

b) A∩B={2,3,5}

c) A∪{2,5,6}={0,1,2,3,5,6,7}

d) B∪{0,2,4}={0,2,3,4,5,6,8}

Answer 1

Răspuns:

3 si 4 trebuie sa fie in ambele multimi, iar 3+4+5+8=3+4+6+7