已知全集U={1,2,3,4,5,6,7},A={2,4,5},则CUA=______.
题型:填空题难度:一般来源:不详
已知全集U={1,2,3,4,5,6,7},A={2,4,5},则CUA=______. |
答案
因为全集U={1,2,3,4,5,6,7},A={2,4,5}, 则CUA={1,3,5,7}. 故答案为:{1,3,5,7}. |
举一反三
已知集合A={2,5,6},B={3,5},则集合A∪B=______. |
若集合U={1,2,3,4,5},M={3,4},N={4,5},则CU(M∪N)=______. |
已知A={(x,y)|4x+y=6},B={(x,y)|3x+2y=7},则A∩B=______. |
已知集合M={O,2,3,4},N={x|x=2a,a∈M},则集合M∩N=( )A.{0} | B.{0,2} | C.{0,4} | D.{2,4} |
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设全集U={1,2,3,4},A={1,2,3},B={3,4}. (1)求A∩B,CUB; (2)写出集合A的所有子集. |
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