\[\mathbf{Страница\ 74.}\]
\[\boxed{\mathbf{2.}}\]
\[СЗЗЗ;\ \ ЗСЗЗ;\ \ ЗЗСЗ;\ \ ЗЗЗС.\]
\[Ответ:4\ маршрута.\]
\[\boxed{\mathbf{3.}}\]
\[\textbf{а)}\]
\[4\ л\] | \[7\ л\] | \[7\ л\] | \[8\ л\] |
---|---|---|---|
\[0\] | \[0\] | \[0\] | \[18\] |
\[0\] | \[7\] | \[7\] | \[4\] |
\[4\] | \[3\] | \[7\] | \[4\] |
\[4\] | \[3\] | \[3\] | \[8\] |
\[4\] | \[6\] | \[0\] | \[8\] |
\[0\] | \[6\] | \[0\] | \[12\] |
\[\textbf{б)}\ \]
\[3\ л\] | \[5\ л\] | \[9\ л\] |
---|---|---|
\[3\] | \[3\] | \[2\] |
\[1\] | \[5\] | \[2\] |
\[1\] | \[0\] | \[7\] |
\[0\] | \[1\] | \[7\] |
\[3\] | \[1\] | \[4\] |
\[\boxed{\mathbf{4.}}\]
\[\textbf{а)}\ 3\]
\[\textbf{б)}\ 6\]
\[\textbf{в)}\ 10\]
\[\textbf{г)}\ \frac{n(n - 1)}{2};\]
\[где\ n - количество\ точек.\]