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[单选题]
设集合A={1,2,3},B={3,4,5},C={5,6,7},则A∪B–C=()。
A.{2,3,4,5}
B.{1,2,3,4}
C.{1,2,3,5}
D.{4,5,6,7}
查看答案
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A.{2,3,4,5}
B.{1,2,3,4}
C.{1,2,3,5}
D.{4,5,6,7}
A.{0,1,2,3,4,6}
B.{1,2,3,4}
C.{2,4}
D.{2,4,6}
设集合A={1,2,3},B={2,3},C={1,3,4},则(A∩B)∪C等于
A.{1,2,3}
B.{1,2,4}
C.{1,3,4}
D.{1,2,3,4}
下列数组定义中错误的是()。
A.int x[][3]={0};
B.int x[2][3]={{1,2},{3,4},{5,6}};
C.int x[][3]={{1,2,3},{4,5,6}};
D.int x[2][3]={1,2,3,4,5,6};