Matematika Master. Tenglamalar. 1271-1294
30:45
Matematika Master. 1295-1330
46:19
Matematika Master. 1369-1392
39:59
Matematika Master. Chiziqli tenglamalar.
36:30
Matematika Master. 1174-1191
50:54
IDC, Qisqa ko'paytirish formulalari
35:41
Matematika Master. 2244-2278
46:01
IDC. Ko'phadni ko'paytuvchilarga ajratish. Algebraik kasrlar.
45:16