Posted by **abby** on Saturday, June 15, 2013 at 2:38pm.

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 B) ̅=(A ) ̅B ̅

c. A (BC)=(AB)C

d. (A-B)A=A

e. A-(BC)=(A-B)(A-C)

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