18.13: Sets
1. \(\{m, i, s, p\}\) 3. One possibility is: Multiples of 3 between 1 and 10
5. Yes 7. True
9. True 11. False
13. \(A \cup B=\{1,2,3,4,5\}\) 15. \(A \cap C=\{4\}\)
17. \(A^{c}=\{6,7,8,9,10\}\) 19. \(D^{c} \cap E=\{t, s\}\)
21. \((D \cap E) \cup F=\{\mathrm{k}, \mathrm{b}, \mathrm{a}, \mathrm{t}, \mathrm{h}\}\) 23. \((F \cap E)^{c} \cap D=\{\mathrm{b}, \mathrm{C}, \mathrm{k}\}\)
25. 27.
29. One possible answer: \((A \cap B) \cup(B \cap C)\)
31. \(\left(A \cap B^{2}\right) \cup C\) 33. \(5\)
35. \(6\) 37. \(\mathrm{n}(A \cap C)=5\)
39. \(\mathrm{n}(A \cap B \cap C)=3\) 41. \(\mathrm{n}(G \cup H)=45\)
43. 136 use Redbox
45. a) 8 had seen exactly one b) 6 had only seen SW