\[\mathbf{Страница\ 31.}\]
\[\boxed{\mathbf{7.}}\]
\[1 - \frac{1}{2} \cdot \frac{1}{2} = 1 - \frac{1}{4} = \frac{3}{4}\]
\[Ответ:\ \frac{3}{4}.\]
\[\boxed{\mathbf{8.}}\]
\[Всего\ 5\ исходов:\]
\[2\ и\ 6;\]
\[6\ и\ 2;\]
\[3\ и\ 5;\]
\[5\ и\ 3;\]
\[4\ и\ 4.\]
\[\textbf{а)}\ P = \frac{1}{5} = 0,2.\]
\[\textbf{б)}\ P = \frac{1}{5} = 0,2.\]
\[\boxed{\mathbf{9.}}\]
\[P = \frac{6}{25} = \frac{24}{100} = 0,24.\]
\[Ответ:0,24.\]
\[\boxed{\mathbf{10.}}\]
\[P = \frac{2}{6} = \frac{1}{3}.\]
\[Ответ:\ \frac{1}{3}.\]
\[\boxed{\mathbf{1.}}\]
\[Сегодня\ среда.\]