设全集U={1,2,3,4,5},集合A={1,2,3},B={2,3,4},则∁U(A∪B)=______.
题型:填空题难度:一般来源:不详
设全集U={1,2,3,4,5},集合A={1,2,3},B={2,3,4},则∁U(A∪B)=______. |
答案
∵集合A={1,2,3},B={2,3,4}, ∴A∪B={1,2,3,4}, ∵全集U={1,2,3,4,5}, ∴∁U(A∪B)={5}. 故答案为:{5} |
举一反三
已知集合M={1,2,3},N={0,1,2},则M∩N等于( )A.{0,1,2,3} | B.{0,1} | C.{1,2} | D.∅ |
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已知全集U={1,2,3,4},集合P={1,2},Q={2,3},则P∩(∁UQ)=______. |
设集合U={0,l,2,3,4,5,6},M={l,3,5},N={2,4,6},则(∁UM)∪(∁UN)=( )A.{0} | B.{1,3,5} | C.{2,4,6} | D.{0,1,2,3,4,5,6} |
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已知全集U={0,1,2,3},集合A={0,1,2},B={0,2,3},则A∩∁UB等于( ) |
集合A={x|x2-ax+a2-19=0},B={x|x2-5x+6=0},C={x|x2+2x-8=0}满足A∩B≠?,A∩C=?,求实数a的值. |
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