\[\boxed{\mathbf{1194}\mathbf{.}}\]
\[1)\ 4,\ 15,\ 6,\ 7,\ 3,\ 6,\ 8;\]
\[Mo = 6.\]
\[2)\ 18,\ 9,\ 5,\ 3,\ 7,\ 9,\ 1;\]
\[Mo = 9.\]
\[3)\ 1,\ 3,\ 5,\ 1,\ 4,\ 3,\ 2;\]
\[Mo_{1} = 1;\ \ \]
\[Mo_{2} = 3.\]
\[4)\ 6,\ 8,\ 5,\ 4,\ 8,\ 3,\ 6;\]
\[Mo_{1} = 6;\ \ \]
\[Mo_{2} = 8.\]