\[1)\ Сотрудник - мужчина:\]
\[P(A) = \frac{120 - 40}{120} = \frac{80}{120} = \frac{2}{3}.\]
\[2)\ P\left( \text{ABC} \right) = P(A) \bullet P(B) \bullet P(C) =\]
\[- \frac{2}{3} \bullet 0,2 \bullet 0,1 = \frac{2}{3} \bullet \frac{2}{10} \bullet \frac{1}{10} =\]
\[= \frac{4}{300} = \frac{1}{75}.\]
\[Ответ:\ \ \frac{1}{75}.\]