**Unformatted text preview: **} , B = { g, h, e, i } , C = { g, h, e } , D = { k, l, m } , E = { e, h, k, m } (a) Is it true that k ∈ C ? How about k ∈ D ? (b) Is A = B ? Why or why not? (c) Is C a subset of A ? (d) Is A a subset of B ? (e) Write out all the subsets of D . How many subsets of D are there? (f) Is it true that B ∼ C ? Why or why not? (g) What could be a possible universal set U for these sets? (h) How can you describe D ? (i) What is B ∩ C ? (j) What is B ∪ E ? 3) Using Venn diagrams, prove the second of DeMorgan’s Laws: ( A ∩ B ) = A ∪ B . 1...

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- Fall '10
- Beaulieu
- Math, Set Theory, Sets, Probability, builder notation, Universal set, possible universal set