Mathematics
Mathematics, 18.09.2021 14:00, brattymoo1009

Một hộp có 15 sản phẩm tốt và 5 sản phẩm xấu. Chọn ngẫu nhiên lần lượt không hoàn lại 3 sản phẩm từ hộp. Có bao nhiêu cách để chọn:
a. Ba sản phẩm từ hộp.
b. Ba sản phẩm đều là tốt.
c. Có 2 sản phẩm tốt và 1 sản xấu được chọn

answer
Answers: 3

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Một hộp có 15 sản phẩm tốt và 5 sản phẩm xấu. Chọn ngẫu nhiên lần lượt không hoàn lại 3 sản phẩm t...

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