chapter 5 arithmetic progression

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9:39

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2:01:59

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1:09:46

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11:19

7:36

25:33

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36:21

1:17:04

16:24

7:14

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38:36

29:42

24:06

8:09

7:07

13:18

6:39

6:07

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12:59

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5:13

28:52

7:50

3:11

39:56

32:50

2:58

31:21

3:02

33:59

5:36

8:02

7:21

2:39:17

4:24

7:24

59:57

2:01

2:18

1:04:30

57:30

2:28:55

6:08

3:33

3:32

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13:18

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41:20

6:06

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