Question

Sejam os conjuntos A = {a, b, c, d}, B = c, d, e, f, g) e C = {b, d, e, g}. Determine:
a) A - B b) B - A c) C - B d) (A ∪ C) - B e) (A ∪ B) - (A ∩ C)

Answer 1

A = {a, b, c, d}
B = {c, d, e, f, g}
C = {b, d, e, g}

a) A - B = {a, b, c} 
b) B - A = {e, f, g} 
c) C - B = {b}
d) (A ∪ C) - B = {a, b, c, d, e, g} - {c, d, e, f, g} = {a, b}
e) (A ∪ B) - (A ∩ C) = {a, b, c, d, e, f, g} - {b, d} = {a, c, e, f, g}