В классе 7 мальчиков и 8 девочек.Нужно выбрать старосту,заместителя старосты и редактора

В классе 7 мальчиков и 8 девочек.Нужно выбрать старосту,заместителя старосты и редактора газеты.При этом в составе староста и заместитель старосты должны быть мальчик и девочка.Сколько существует различных вариантов управляющего состава,если это три разных человека?
- Предмет:
  Алгебра
- Автор:
  moore
- 5 лет назад

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