c) $$rac{6}{10} \div \frac{1}{5}$$

Bo'lishni bajarish uchun, bo'linuvchini bo'luvchining teskarisiga ko'paytirish kerak: $$\frac{6}{10} \div \frac{1}{5} = \frac{6}{10} \times \frac{5}{1} = \frac{6 \times 5}{10 \times 1} = \frac{30}{10}$$ Endi kasrni soddalashtiramiz: $$\frac{30}{10} = 3$$ Javob: 3