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}.
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)=______.
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}.