Mathematics, 17.06.2021 16:50 Anderson0300
Một lớp học có 40 học sinh gồm 25 nữ và 15 năm .Chọn ngẫu nhiên 3 học sinh .Tính xác suất để 3 học sinh được chọn có 1 nữ và 2 nam
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Một lớp học có 40 học sinh gồm 25 nữ và 15 năm .Chọn ngẫu nhiên 3 học sinh .Tính xác suất để 3 học s...
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