设全集U={x|0≤x<10,x∈N*},集合A={2,4,6,8},则CUA=( )A.{0,1,3,5,7}B.{0,1,3,5,7,9}C.{1,3,5
题型:单选题难度:简单来源:不详
设全集U={x|0≤x<10,x∈N*},集合A={2,4,6,8},则CUA=( )A.{0,1,3,5,7} | B.{0,1,3,5,7,9} | C.{1,3,5.7} | D.{1,3,5,7,9} |
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答案
根据题意,设全集U={x|0≤x<10,x∈N*}={1,2,3,4,5,6,7,8,9}, 而A={2,4,6,8}, 则?UA={1,3,5,7,9}, 故选D. |
举一反三
设集合A={a,b},B={b,c,d},则A∪B=( )A.{b} | B.{b,c,d} | C.{a,c,d} | D.{a,b,c,d} |
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已知集合M满足M∪{1,2}={1,2,3},则集合M的个数是( ) |
已知全集U={1,2,3,4,5,6,7,8},A={3,4,5},B={1,3,6},则集合C={2,7,8}=______.(用集合A,B表示) |
已知A={1,2,4,6},B={3,4,5},U={1,2,3,4,5,6},求CuA∪B=( )A.{1,2,3,4,5,6} | B.{1,2,4,6} | C.{2,4,5} | D.{3,4,5} |
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已知集合U={1,2,3,4,5},A={1,2,3},B={2,5},则A∩CUB=( ) |
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