又m∈N.從而m=4.5.6.7.8. 查看更多

 

題目列表(包括答案和解析)

1、設(shè)A-B={x|x∈A且x∉B}.若M={4,5,6,7,8},N={7,8,9,10},則M-N等于( 。

查看答案和解析>>

設(shè)A-B={x|x∈A且x∉B}.若M={4,5,6,7,8},N={7,8,9,10},則M-N等于( 。
A.{4,5,6,7,8,9,10}B.{7,8}
C.{4,5,6,9,10}D.{4,5,6}

查看答案和解析>>

設(shè)A-B={x|x∈A且x∉B}.若M={4,5,6,7,8},N={7,8,9,10},則M-N等于( )
A.{4,5,6,7,8,9,10}
B.{7,8}
C.{4,5,6,9,10}
D.{4,5,6}

查看答案和解析>>

設(shè)A-B={x|x∈A且x∉B}.若M={4,5,6,7,8},N={7,8,9,10},則M-N等于( )
A.{4,5,6,7,8,9,10}
B.{7,8}
C.{4,5,6,9,10}
D.{4,5,6}

查看答案和解析>>

設(shè)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}

查看答案和解析>>


同步練習(xí)冊答案