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2) Let A, B, and C be sets. Show that: a) (AUB) S (AU BUC). b) (An BnC) S(An B). c) (A - B) -

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2) Let A, B, and C be sets. Show that: a) (AUB) S (AU BUC). b) (An BnC) S(An B). c) (A - B) - CCA-C. d) (A - C) n(C B) = 0. e) (B - A) U (C - A) = (BUC) - A

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