given U={-5,-4,-3,-2,1,0,1,2,3,4,5} A={-2,-1,0,1,2}
B={-4,-2,0,2,4}
C={-5,-3,-1,0,1,3,5}
find the following sets.
1.A'= ______________________
2.B'= ______________________
3.A'-B'= ______________________
4.A-C= ______________________​