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12 May 2018

1. Let A and B be two subsets of some universal set. Prove that if (AUB) = AUB, then A=B.

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adieLv10

17 Apr 2022

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12 May 2018

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Related questions

1. Prove that for any two sets A, B, we have (ANB) = AUB

25. In this problem, A, B, C are sub- sets of a universal set U. One of the following is always true. Which one? (A) (ANBAC') U (A'N B'nC) c AnB'no' (B) A'NB'no'=0 (C) AC BUA' (D) ANBC BUC' (E) (AUB)' = A'U B' (F) none of the above

22. Two indepentent events A and B have probabilities Pr[A] = .2 and Pr[B] = .8. Find Pr[AUB). (A) .16 (B) .84 (C) .8 (D) 1 (E) .64 (F) none of the above

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