Mathematics, 08.12.2021 16:20 chrisssrutter

Trong không gian Oxyz cho 9 điểm có tọa độ nguyên. Chứng minh rằng luôn tìm được 2 điểm mà trung điểm của nó cũng có tọa độ nguyên

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Trong không gian Oxyz cho 9 điểm có tọa độ nguyên. Chứng minh rằng luôn tìm được 2 điểm mà trung đ...

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