\[\boxed{\mathbf{662}.}\]
\[1)\ {1,7}^{3}\text{\ \ }и\ \ 1;\]
\[Функция\ y = {1,7}^{x}\ возрастает:\]
\[y(3) > y(0);\]
\[{1,7}^{3} > {1,7}^{0};\]
\[{1,7}^{3} > 1.\]
\[2)\ {0,3}^{2}\text{\ \ }и\ \ 1;\]
\[Функция\ y = {0,3}^{x}\ убывает:\]
\[y(2) < y(0);\]
\[{0,3}^{2} < {0,3}^{0};\]
\[{0,3}^{2} < 1.\]
\[3)\ {3,2}^{1,5}\text{\ \ }и\ \ {3,2}^{1,6};\]
\[Функция\ y = {3,2}^{x}\ возрастает:\]
\[y(1,5) < y(1,6);\]
\[{3,2}^{1,5} < {3,2}^{1,6}.\]
\[4)\ {0,2}^{- 3}\text{\ \ }и\ \ {0,2}^{- 2};\]
\[Функция\ y = {0,2}^{x}\ убывает:\]
\[y( - 3) > y( - 2);\]
\[{0,2}^{- 3} > {0,2}^{- 2}.\]
\[5)\ \left( \frac{1}{5} \right)^{\sqrt{2}}\ и\ \ \left( \frac{1}{5} \right)^{1,4};\]
\[\sqrt{2} \approx 1,41\ldots;\]
\[\sqrt{2} > 1,4;\]
\[Функция\ y = \left( \frac{1}{5} \right)^{x}\ убывает:\]
\[y\left( \sqrt{2} \right) < y(1,4);\]
\[\left( \frac{1}{5} \right)^{\sqrt{2}} < \left( \frac{1}{5} \right)^{1,4}.\]
\[6)\ 3^{\pi}\text{\ \ }и\ \ 3^{3,14};\]
\[\pi \approx 3,1415\ldots;\]
\[\pi > 3,14;\]
\[Функция\ y = 3^{x}\ возрастает:\]
\[y(\pi) > y(3,14);\]
\[3^{\pi} > 3^{3,14}.\]