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duyenk5a2
2 năm trước
Cho ba số tự nhiên a, b, c, trong đó a là số nhỏ nhất. Biết rằng trên tia số , điểm b nằm giữa hai điểm a và c. Hãy dùng kí hiệu"<" để mô tả thứ tự của ba số a,b và c. Cho ví dụ bằng số cụ thể.
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