Tell whether each of the following is true for all sets A, B, or C. If false, give a counterexample.?
a. A-B=A- ∅
b. (A �¾B) ̅=(A ) ̅�¾B ̅
c. A �¿(B�¾C)=(A�¿B)�¾C
d. (A-B)�¿A=A
e. A-(B�¿C)=(A-B)�¿(A-C)
a. A-B=A- ∅
b. (A �¾B) ̅=(A ) ̅�¾B ̅
c. A �¿(B�¾C)=(A�¿B)�¾C
d. (A-B)�¿A=A
e. A-(B�¿C)=(A-B)�¿(A-C)