\[C = C_{6}^{2} \bullet C_{4}^{1} =\]
\[= \frac{6!}{2!(6 - 2)!} \bullet \frac{4!}{1!(4 - 1)!} =\]
\[= \frac{6 \bullet 5 \bullet 4!}{2 \bullet 4!} \bullet \frac{4 \bullet 3!}{1 \bullet 3!} = 3 \bullet 5 \bullet 4 =\]
\[= 3 \bullet 20 = 60\ способов.\]
\[Ответ:\ \ 60.\]