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dothithuthuy11122002
2 năm trước
a.Dấu hiệu điều tra ở đây là gì? Lớp 7B có bao nhiêu học sinh làm bài kiểm tra? b.Tìm mốt và tính số trung bình cộng của dấu hiệu( Làm tròn đến chữ số thập phân thứ nhất)
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