Question

Determinar o conjunto X tal que:

I. (a, b, c, d) ∪ X = (a, b, c, d, e)
II. (c, d) ∪ X = (a, c, d, e)
III. (b, c, d) ∩ X = (c).

Answer 1

Resposta |. X={a,c,e}