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riadik2000 [5.3K]
3 years ago
15

Hộp I có 10 sản phẩm tốt, 2 hỏng; hộp II có 20 sản phẩm tốt, 4 hỏng. Chọn ngẫu nhiên một hộp, rồi từ đó lấy ta một sản phẩm.

Mathematics
1 answer:
GaryK [48]3 years ago
6 0

Answer:

60

Step-by-step explanation:

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