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Mathematics, 04.10.2021 21:30 jorgeb12316

Помогите решить задачи: 1.Сколько комбинаций можно составить из букв слова школа используя по 2 буквы?Из букв слова группа
2.Сколькими способами из 10 человек можно выбрать 3 дежурных?
3.В ящике 10 шаров с номерами от 1 до 10,сколько комбинаций их случайного извлечения существует, что бы номера извлекаемых шаров не образовывали последовательность?

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Помогите решить задачи: 1.Сколько комбинаций можно составить из букв слова *школа* используя по 2...

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