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May 30, 2015

Homework Help: math

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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