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Mathematics, 27.10.2021 09:50 apalacios3503

có 3 nhóm sinh viên, nhóm 1 có 4 nam 5 nữ, nhóm 2 có 5 nam 6 nữ, nhóm 3 có 6 nam 7 nữ. chọn ngẫu nhiên một nhóm sinh viên. tính xác suất có ít nhất 2 sinh viên nữ

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có 3 nhóm sinh viên, nhóm 1 có 4 nam 5 nữ, nhóm 2 có 5 nam 6 nữ, nhóm 3 có 6 nam 7 nữ. chọn ngẫu nhi...

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