Respostas

2013-12-02T19:06:43-02:00
A={1,2,3,4}
B={4,5}
C={3,4,5,6,7}

(A-B) Ω C  = 
(A - B) = A 
{1,2,3,4} Ω C {3,4,5,6,7} = 3, 4.
2 1 2