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集合A={1,2,…,10}上的关系R={|x+y=10,x,y∈ A}，则R 的性质为_______
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集合A={1,2,…,10}上的关系R={|x+y=10,x,y∈ A}，则R 的性质为_______
时间：2021-09-02 15:32
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河南理工大学
计算机科学与技术
离散数学
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