matrices important questions

45:59

17:11

42:03

42:40

1:22:04

1:22:37

22:13

42:13

33:39

1:38:26

1:25:37

27:26

49:44

54:09

45:39

1:46:52

31:16

1:25:01

2:24:17

19:26

19:38

13:16

1:58:24

10:08

2:48:02

1:15:56

1:17:14

13:30

36:43

20:20

1:12:55

9:10

28:56

51:30

17:10

2:10:26

1:55:31

2:24:20

33:00

31:33

2:36:28

1:51:07

20:39

1:28:13

17:56

26:27

43:33

8:18

36:19

28:45

31:42

26:07

22:38

16:05

1:14:01

29:31

18:39

46:15

1:03:05

8:51