Question

Dado que: A={a, b, c}, B={b, c, d}, C={a, c, d, e}, o conjunto (A-C)U(C-B)U(A∩B∩C) é:

Answer 1

A-C={b}
C-B={a,e}
A∩B∩C={a,c}
Portanto
(A-C)U(C-B)U(A∩B∩C)={b}U{a,e}U{a,c}={a,b,c,e}