1.设集合M={4,5,6,8},集合N={3,5,7,8}那么M∪N=( ) A.{3,4,5,6,7,8} B.{5,8} C.{3,5,7,8} D.{4,5,6,8} 查看更多

 

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设集合M={4,5,6,8},集合N={3,5,7,8},那么MN=

A. {3,4,5,6,7,8}                   B. {5,8}                C.{3,5,7,8}                  D.{4,5,6,8}

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设集合M={4,5,6,8},集合N={3,5,7,8},那么M∪N=


  1. A.
    {3,4,5,6,7,8}
  2. B.
    {5,8}
  3. C.
    {3,5,7,8}
  4. D.
    M={4,5,6,8}

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设集合M={4,5,6,8},集合N={3,5,7,8},那么M∪N=
[     ]
A.{3,4,5,6,7,8}
B.{5,8}
C.{3,5,7,8}
D.{4,5,6,8}

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设集合M={1,2,4,6,8},N={1,2,3,5,6,7},则M∩N中元素的个数为(  )
A、2B、3C、5D、7

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设集合M={1,2,4,6,8},N={2,3,5,6,7},则M∩N中元素的个数为

[  ]

A.

2

B.

3

C.

5

D.

7

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