設(shè)集合A={1,3,4,6,7,8}.B={1.2.4.5.7.8}.則A. A∩B={1.4.7.8} B. A∩B={2,3,5,6}C. A∪B={1.4.7.8} D. A∩B={1.2.3.4.5.6.7.8} 查看更多

 

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設(shè)集合A={1,2,3,4,5,6},B={4,5,6,7,8},則滿足SASB≠∅的集合S的個(gè)數(shù)是                                                                                    (  )

A.57                              B.56

C.49                              D.8

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.設(shè)集合A={0,1,2,4,5,7},B={1,3,6,8,9},C={3,7,8}.則集合(A∩B)∪C=    ,  (A∪C)∩(B∪C)=    .

 

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設(shè)集合U={x∈N|0<x≤8},S={1,2,4,5},T={3,5,7},則

[  ]

A.{1,2,4}

B.{1,2,3,4,5,7}

C.{1,2}

D.{1,2,4,5,6,8}

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設(shè)A={1,2,3,4,5,6,7,8,9},,y∈A,},求集合B的元素個(gè)數(shù).

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設(shè)集合A={3,5,6,8},集合B={4,5,7,8},則集合A∩B的子集個(gè)數(shù)為

[  ]

A.1

B.2

C.3

D.4

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