问题 填空题

已知A={1,2,3,4,5,6,7,8,9},B={1,2,3},C={3,4,5,6},则A∩(B∪C)=______.

答案

由题意B={1,2,3},C={3,4,5,6},

∴B∪C={1,2,3,4,5,6},

又A={1,2,3,4,5,6,7,8,9},

故A∩(B∪C)={1,2,3,4,5,6}

故答案为:{1,2,3,4,5,6}.

填空题
单项选择题