1 C 012.10-210 = 20 = 5 5 36 105.36 = 5034 = 1080 11 h Om 24

a) \[\frac{2}{5} \cdot 10 = \frac{2 \cdot 10}{5} = \frac{20}{5} = 4\]

б) \[\frac{5}{9} \cdot 36 = \frac{5 \cdot 36}{9} = \frac{180}{9} = 20\]

в) \[\frac{1}{4} \cdot \frac{8}{27} = \frac{1 \cdot 8}{4 \cdot 27} = \frac{8}{108} = \frac{2}{27}\]

Ответ: a) 4; б) 20; в) \(\frac{2}{27}\)