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Mathematics, 28.09.2021 01:00 antcobra

Đội tuyển học sinh giỏi lớp 5 sau khi đi học được 2 tháng thì loại 3/7 số bạn. Sau đó tiếp tục loại thêm 1/4 bạn còn lại thì còn 6 bạn. Hỏi lúc đầu đội tuyển có bao nhiêu bạn?

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Đội tuyển học sinh giỏi lớp 5 sau khi đi học được 2 tháng thì loại 3/7 số bạn. Sau đó tiếp tục loại...
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