Dau 20 pct va rog toate

Răspuns:
1)
A = {1,2,3,5} B={0,1,2,4,6} C={2,3,4,6,7}
AUC = {1,2,3,4,5,6,7}
AnB = {1,2}
C\A = {4,6,7}
(AUC)\B = {1,2,3,4,5,6,7} \ {0,1,2,4,6} = {3,5,6}
2)
XnY = {3,4} X\Y = {1,2} XUY = {1,2,3,4,5}
X = {1,2,3,4}
Y = {3,4,5}
3)
A = {2,4}
B = {0,2}
C = {3}