Question

sejam os conjuntos A= {a, b, c, 1, 2, B= {d, e, 1, 3}, c= {a, d, 2, 3} e d= {d, c, 2}

determine:
a) A∪B b) B∩C

c) A∪C∪D d) A∩B∩C​

Answer 1

I do not know

I do not know

Hope this helps