Một hộp có 4 bi xanh, 4 bi đỏ, 5 bi vàng. có bao nhiêu cách chọn ra 4 bi có đủ 3 màu? có đúng 2 màu?

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randkphillipsp5v56r

05.07.2021

Mathematics

$\frac{8}{9} \div \frac{1}{8}$

$\frac{8}{9} \times 8$

$\frac{64}{9}$

$7 \frac{1}{9}$

$hope \: this \: help \:$

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