homework 7 solution

homework 7 solution - 26 4 35 a 0 b 120 c 720 d 2520 37 a 2...

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Selected Answers to HW 7 October 8, 2012 Note: 1. There is a possibility of typos; in case you notice one, let me know. 2. These are just the answers; you must show work in your homework/quiz to get full credit. Section 6.1 1. a) 5850. b) 343. 4. 72. 8. 15600. 15. 475254. 16. 66351. 20. a) 9; 6 , 9 , 12 , 15 , 18 , 21 , 24 , 27 , 30. b) 6; 8 , 12 , 16 , 20 , 24 , 28. c) 2; 12 , 24. 24. a) 1000. b) 4500. c) 4536. d) 6000. e) 2829. f) 6171. g) 1543. h) 257. 26. a) 5040. b) 5000. c) 36. 28. 35152000. 1
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32. a) 26 8 . b) 26 · 25 · 24 · 23 · 22 · 21 · 20 · 19. c) 26 7 . d) 25 · 24 · 23 · 22 · 21 · 20 · 19. e) 26 6 . f) 26 6 . g) 26 4 . h) 1351
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Unformatted text preview: 26 4 . 35. a) 0. b) 120. c) 720. d) 2520. 37. a) 2 , if n = 1 , 2 , , otherwise . Notice that the answer is the same as 2 · (2-1) · · · (2-( n-1)). b) 1 , if n = 1 , 2 n-2 , otherwise . c) 2( n-1). 40. 2 100-101. 44. 1260. 45. 60. 46. a) 90720. b) 50400. c) 80640. 50. 222. 52. 54. 53. 33. 54. 26 2 + 26 3 + 26 4 + 26 5 = 12356604. 58. 1109 · 10(10 15-1) 9 . 60. 26 3 + 26 4 + 26 5 + 26 6 = 321271704. 63. 666667. 68. b) 17. 73. n ( n-3) 2 . 2...
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