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Chapter 1, page 5
1. 10.
3. 1.
5. 1 2 1 1 2 1 1 3 3 1.7. 1, 1 + 5 = 6, 5 + 10 = 15, 10 + 10 = 20, 10 + 5 = 15, 5 + 1 = 6, and 1;
1, 1 + 6 = 7, 6 + 15 = 21, 15 + 20 = 35, 20 + 15 = 35, 15 + 6 = 21, 6 + 1 = 7, and 1.
9.
11. 125x3 + 150x2y + 60xy2 + 8y3.
17. c = 56, m = 5.
19. (a) 4. (b) 8. (c) 16. (d) 32. (e) 64. (f) 128.
21. (a) 0. (b) 0.
23. (a) 8. (b) 16. (c) 32. (d) 64.
25. r = 6, s = 7, t = 6, u = 7.
27. 
31. 
33. 3.
37. 3.
39. 36, of which 27 are odd.
41. 0, 1, 3, 7, and 15.
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