\[\boxed{\mathbf{643\ (643).\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ Р\ (А) = \frac{10}{30} = \frac{1}{3};\ \ \ \ \]
\[(2,\ 3,\ 5,\ 7,\ 9,\ 11,\ 13,\ 17,\ 19,\ 23,\ 29).\]
\[2)\ Р\ (А) = \frac{6}{30} = \frac{1}{5};\ \ \ \]
\[(1,\ 2,\ 3,\ 6,\ 9,\ 18).\]
\[3)\ Р\ (А) = \frac{5}{30} = \frac{1}{6};\ \ \]
\[(1,\ 4,\ 9,\ 16,\ 25).\]