设A={ 1,2,3,4,5,6},B={ 1,3,8,9},C={ 1,3,6,8},则A∪B∪C=_________
设A={ 1,2,3,4,5,6},B={ 1,3,8,9},C={ 1,3,6,8},则A∪B∪C=_________
【正确答案】:{1,2,3,4,5,6,8,9}
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