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Mathematics, 14.06.2021 20:50 scottcourtney460

Có 3 kiện hàng, kiện I có 7 sản phẩm tốt, 3 sản phẩm hỏng; kiện II có 10 sản phẩm tốt, 4 sản phẩm hỏng và kiện III có 9 sản phẩm tốt, 3 sản phẩm hỏng. Chọn ngẫu nhiên 1 kiện
hàng rồi từ đó chọn ra 2 sản phẩm.
a) Tính xác suất để 2 sản phẩm chọn được đều hỏng.
b) Giả sử 2 sản phẩm chọn được đều hỏng, tính xác suất để 2 sản phẩm đó thuộc
kiện hàng thứ III.

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Có 3 kiện hàng, kiện I có 7 sản phẩm tốt, 3 sản phẩm hỏng; kiện II có 10 sản phẩm tốt, 4 sản phẩm h...

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