Ответ:
\[\frac{\sqrt{15} \cdot \sqrt{6} \cdot \sqrt{10}}{3} = \frac{\sqrt{15 \cdot 6 \cdot 10}}{3} =\]
\[= \frac{\sqrt{900}}{3} = \frac{30}{3} = 10.\]
\[\frac{\sqrt{15} \cdot \sqrt{6} \cdot \sqrt{10}}{3} = \frac{\sqrt{15 \cdot 6 \cdot 10}}{3} =\]
\[= \frac{\sqrt{900}}{3} = \frac{30}{3} = 10.\]