I chorak algebra – sinf – nazorat ishi Yozma ish I variant

Yozma ish № 9

I variant

1.Cheksiz kamayuvchi geometrik progressiyaning yig’indisini toping:

36; 12; 4; …;

2. Cheksiz kamayuvchi geometrik progressiyaning yig’indisi 54 ga teng. Agar bo’lsa, ni toping.

3.2 dan 92 gacha (92 ham kiradi) natural sonlar yig’indisini toping.

4.1 dan 121 gacha barcha toq sonlar yig’indisini toping.

5.Geometrik progressiyada va bo’lsa, va ni toping.

II variant

1.Cheksiz kamayuvchi geometrik progressiyaning yig’indisini toping:

49; 7; 1; …;

2. Cheksiz kamayuvchi geometrik progressiyaning yig’indisi 81 ga teng. Agar bo’lsa, ni toping.

3. 2 dan 102 gacha (102 ham kiradi) natural sonlar yig’indisini toping.

4. 1 dan 100 gacha barcha toq sonlar yig’indisini toping.

5. Geometrik progressiyada va bo’lsa, va ni toping.