\[\boxed{\mathbf{3.}\mathbf{359}}\]
\[\textbf{а)}\ 345\ :10\]
\[r = 5.\]
\[\textbf{б)}\ 4967\ :2\]
\[r = 1.\]
\[\textbf{в)}\ 4734\ :5\]
\[r = 4.\]
\[\textbf{г)}\ 4856\ :5\]
\[r = 1.\]
\[\textbf{д)}\ 1000\ :3\]
\[r = 1.\]
\[\textbf{е)}\ 10\ 000\ :9\]
\[r = 1.\]