20-Dars(2-qism). Ildizlar. N-chi Darajali Ildiz, Ratsional Ko'rsatkichli Daraja
40:40
23-dars. Viyet teoremasi.
47:27
48-dars. Cheksiz kamayuvchi geometrik progressiya
1:09:34
32-dars. Oraliqlar usuli
1:22:07
33-dars. Oraliqlar usuli(2-qism)
46:55
45-dars. Arifmetik progressiyaning dastlabki N ta hadi yig'indisi (2-qism)
59:37
31-Dars.Chiziqli tengsizliklar. Chiziqli tengsizliklar sistemasi.
1:04:26
35-dars. Tengsizliklarni isbotlash
58:56