\[\boxed{\mathbf{103.}}\]
\[Всего\ исходов,\ когда\ сумма\ \]
\[равна\ 9,\ четыре:\]
\[3 + 6;4 + 5;5 + 4;6 + 3.\]
\[\textbf{а)}\ 5 + 4:\]
\[\frac{1}{4}.\]
\[\textbf{б)}\ 4 + 5;5 + 4:\]
\[\frac{2}{4} = \frac{1}{2}.\]
\[\textbf{в)}\ 3 + 6;4 + 5:\]
\[\frac{2}{4} = \frac{1}{2}.\]
\[\textbf{г)}\ 0.\]