Mathematics
Mathematics, 21.07.2021 08:20, sanchezp0821

Một nhóm có 5 bác sĩ, 1 kĩ sư và 2 giáo viên. Chọn ngẫu nhiên ra 4 người từ nhóm a) Tính xác suất cả 4 người chọn ra là bác sĩ.
b) Biết rằng trong 4 người chọn ra có hai nghề, tính xác suất chọn được 3 bác sĩ

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Một nhóm có 5 bác sĩ, 1 kĩ sư và 2 giáo viên. Chọn ngẫu nhiên ra 4 người từ nhóm a) Tính xác suất c...

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