集合A={1,2,…,10}上的关系R={|x+y=10,x,y∈ A}，则R 的性质为_______ -题库考试答案搜索网

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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2021-09-02 15:32

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