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Mathematics, 15.06.2021 14:00 jaquiel3325

Bài 1.2. Có hai hộp chứa bi. Hộp I ( 2 bi trắng, 4 bi đỏ), hộp II ( 3 bi trắng, 4 bi đỏ). Lấy ngẫu nhiên ở mỗi hộp ra một bi. Tìm xác suất để: a. Cả hai bi đều trắng?
b. Được 1 bi trắng và 1 bi đỏ?
c. Hai bi cùng màu?

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Bài 1.2. Có hai hộp chứa bi. Hộp I ( 2 bi trắng, 4 bi đỏ), hộp II ( 3 bi trắng, 4 bi đỏ). Lấy ngẫu n...
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