jarman math olympiad problem you should know this trick

6:12

6:12

8:56

8:56

8:56

8:56

7:10

3:34

3:30

کوتاه

کوتاه

1:10

7:13

7:13

9:17

4:36

7:13

4:29

9:27

5:32

9:27

5:32

4:40

4:40

3:35

5:50

5:45

3:35

5:50

5:45

21:35

14:14

8:23

8:23

3:45

11:58

14:14

16:26

2:28

10:12