已知全集U=﹛1,2,3,4,5,6,7﹜,A=﹛2,4,5﹜,B=﹛1,3,5,7﹜,求:(1)A∩(CBU);(2)(CAU)∩(CBU).
题型:解答题难度:一般来源:不详
已知全集U=﹛1,2,3,4,5,6,7﹜,A=﹛2,4,5﹜,B=﹛1,3,5,7﹜, 求:(1)A∩(); (2)()∩(). |
答案
(1)∵CUB={2,4,6 };A={2,4,5} ∴A∩(CUB)={2,4} (2)∵CUA={1,3,6,7}; ∴(CUA)∩(CUB)={6}. |
举一反三
设全集U={1,2,3,4,5},集合M={1,2,3},N={2,3,5},则(CUM)∩(CUN)=( ) |
设U={1,2,3,4,5},若A∩B={2},(CU A)∩B={4},(CU A)∩(CU B)={1,5},则( )A.A={2} | B.A={2,3} | C.B={2,3} | D.B={2,3,4} |
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若集合M={1,2,3},N={2,3,4},则M∩N等于( )A.{2,3} | B.2,3 | C.{1,2,3,4} | D.{3} |
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设集合A={1,3},集合B={1,2,4,5},则集合A∪B=______. |
全集U={1,2,3,4,5},M={1,3,4},N={2,4,5},则CU(M∪N)=( ) |
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