Mathematics, 31.07.2021 05:50 avahrider1

Một hộp đựng 10 quả cầu gồm: 2 quả màu đỏ, 3 quả màu vàng và 5 quả màu xanh. Chọn ngẫu nhiên từ hộp đó ra 4 quả cầu. Tính xác suất chọn được 2 quả màu
xanh.

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Một hộp đựng 10 quả cầu gồm: 2 quả màu đỏ, 3 quả màu vàng và 5 quả màu xanh. Chọn ngẫu nhiên từ hộp...

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Một hộp đựng 10 quả cầu gồm: 2 quả màu đỏ, 3 quả màu vàng và 5 quả màu xanh. Chọn ngẫu nhiên từ hộp đó ra 4 quả cầu. Tính xác suất chọn được 2 quả màu xanh.

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Another question on Mathematics

Một hộp đựng 10 quả cầu gồm: 2 quả màu đỏ, 3 quả màu vàng và 5 quả màu xanh. Chọn ngẫu nhiên từ hộp đó ra 4 quả cầu. Tính xác suất chọn được 2 quả màu
xanh.