设集合A={1,2,3,4,5,6,7,8,9,10},二元关系R={ x,y∈A,x是y的因子,x

设集合A={1,2,3,4,5,6,7,8,9,10},二元关系R={ x,y∈A,x是y的因子,x<5},则domR=_________,ranR=_________。
【正确答案】：{1,2,3,4},{1,2,3,4,5,6,7,8,9,10}或A

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