\(\frac{2}{3}\times\frac{1}{6}\times\frac{9}{11}=\frac{2\times1\times9}{3\times6\times11}\)
\(=\frac{18}{198}=\frac{1}{11}\)
\(\frac{2}{3}x\frac{1}{6}x\frac{9}{11}=\frac{2x1x9}{3x6x11}=\frac{2x3}{1x6x11}=\frac{2}{2x11}=\frac{1}{11}\)
\(\frac{2}{3}\cdot\frac{1}{6}\cdot\frac{9}{11}=\frac{1}{9}\cdot\frac{9}{11}=\frac{1}{11}\)