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Unformatted text preview: necessarily the same set. 3. Prove that we always have A ( B C ) = ( A B ) ( A C ), either using Venn diagrams or by some other (general) argument. 4. Let A be the set of all University of Delaware students. For each of the following relations on A , say whether the relation is (i) reexive (ii) symmetric (iii) transitive. Briey explain. x has a class in common with y x lives in the same zip code as y x has bought a coee for y 1...
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This note was uploaded on 12/07/2011 for the course MATH 210 taught by Professor Staff during the Spring '08 term at University of Delaware.
 Spring '08
 Staff
 Sets

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