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Mathematics, 26.09.2021 02:50 loveeealyric744
Một khách hàng chọn mua một hộp thực phẩm chức năng từ 3
nhãn hàng như sau: nhãn hàng thứ nhất có 3 hộp, nhãn hàng thứ 2 có 4
hộp, nhãn hàng thứ 3 có 5 hộp. Hỏi có bao nhiêu cách chọn ra một hộp
thực phẩm chức năng từ 3 nhãn hàng trên?
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Answers: 2
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Một khách hàng chọn mua một hộp thực phẩm chức năng từ 3
nhãn hàng như sau: nhãn hàng thứ nhất có...
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