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Mathematics, 12.07.2021 16:20 drakkeo

lô hàng có 60% sản phẩm do máy I sản xuất và 40% do máy II sản xuất. Tỷ lệ chính phẩm do máy I và II sản xuất lần lượt là 90% và 85%. Lấy 2 sản phẩm tử lô hàng, tính xác suất lấy được 1 chính phẩm và 1 phế phẩm.

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lô hàng có 60% sản phẩm do máy I sản xuất và 40% do máy II sản xuất. Tỷ lệ chính phẩm do máy I và II...

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