a b b- -a b-b-b b a-a _____________.
For any two sets A and B, prove that
(i) (A∪B)−B=A−B
(ii) A−(A∩B)=A−B
(iii) A−(A−B)=A∩B
(iv) A∪(B−A)=A∪B
(v) (A−B)∪(A∩B)=A
For any two sets A and B, (A−B)∪(B−A)=