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2 năm trước
Một lô hàng gồm 1000 sản phẩm, trong đó có 30 sản phẩm xấu. Lấy ngẫu nhiên 1 sản phẩm (1 lần) 10 sản phẩm từ lô hàng. Tìm xác suất để trong 10 sản phẩm lấy ra có đúng 8 sản phẩm tốt?
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