Предмет: Алгебра, автор: tukochka1224

помогите пожалуйста решить 3 задание с помощью формулы в комбинаторике пожалуйста не рассуждение а формула???

Приложения:

Ответы

Автор ответа: mathgenius

0

Ответ: 81

Объяснение:

Ответ можно вычислить по формуле размещений с повторениями:

Аповт (9,2)=9^2=81

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