5) 11/12 · 2/25 и 2/25 : 2/21

\(\frac{11}{12}\cdot\frac{2}{25}=\frac{22}{300}=\frac{11}{150}\).

\(\frac{2}{25}:\frac{2}{21}=\frac{2}{25}\cdot\frac{21}{2}=\frac{21}{25}\).

Ответ: \(\frac{11}{12}\cdot\frac{2}{25} < \frac{2}{25}:\frac{2}{21}\).