Mathematics, 18.06.2021 14:00 kayleep3947

Có ba hộp đựng các viên bi chỉ khác nhauvề màu sắc. Hộp I có 2 viên bi đỏ và 1 viên bi xanh, Hộp II có 3 viên bi đỏ và 1 viên bi xanh, Hộp III có 2 viên bi đỏ và 2 viên bi xanh. Lấyngẫu nhiên một hộp và từ đó lấy ngẫu nhiên một viên. Tính xác suất để lấy đượcviên bi đỏ

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Có ba hộp đựng các viên bi chỉ khác nhauvề màu sắc. Hộp I có 2 viên bi đỏ và 1 viên bi xanh, Hộp II...

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