Let A and B be sets. Show that a) (A n B) A. b) A (A U B).
Chapter 2, Problem 2.2.16(choose chapter or problem)
Let A and B be sets. Show that a) (A n B) A. b) A (A U B). c) A - B A. d) An (B - A) = 0. e) AU (B - A) = AU B.
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