Вычислим:
- a) \(\frac{4}{5} \cdot \frac{10}{11} = \frac{4 \cdot 10}{5 \cdot 11} = \frac{40}{55} = \frac{8}{11}\)
- б) \(\frac{3}{7} : \frac{18}{19} = \frac{3}{7} \cdot \frac{19}{18} = \frac{3 \cdot 19}{7 \cdot 18} = \frac{57}{126} = \frac{19}{42}\)
- в) \((\frac{2}{4})^3 = (\frac{1}{2})^3 = \frac{1^3}{2^3} = \frac{1}{8}\)
Ответ: a) \(\frac{8}{11}\); б) \(\frac{19}{42}\); в) \(\frac{1}{8}\)