maths model on fractions

4:56

4:56

13:16

12:23

8:59

12:44

13:58

11:10

6:52

12:14

2:10

13:49

6:47

5:56

9:49

5:38

4:15

6:16

3:11

10:36

12:16

6:42

4:39

1:01

2:34

8:53

8:53

6:29

1:48

12:23

2:03:48

1:18:44

5:54

کوتاه

8:04

2:46

2:46

6:40

7:59

1:46