Evaluate

$\color{#3D99F6}{\left(1-\frac{1}{2}\right)\left(1-\frac{1}{3}\right)\left(1-\frac{1}{4}\right)\ldots\left (1-\frac {1}{(n-2)}\right)\left(1-\frac{1}{(n-1)}\right)\left(1-\frac{1}{n}\right)}$ $\color{#EC7300}{= \left (\frac {1}{2}\right)\left (\frac{2}{3}\right)\left (\frac {3}{4}\right)\ldots\left (\frac {n-3}{n-2}\right)\left (\frac {n-2}{n-1}\right)\left (\frac {n-1}{n}\right)}$ $\color{#20A900}{=\boxed {\frac {1}{n}}}$