題目列表(包括答案和解析)
已知全集U={1,2,3,4,5,6,7,8},M={1,3,5,7},
N={5,6,7},則 (M∪N)=( )
A.{5,7} B.{2,4}
C.{2,4,8} D.{1,3,5,6,7}
|
已知全集U={1,2,3,4,5,6,7,8},M={1,3,5,7},N={5,6,7},則(CUM)∩(CUN)=
{5,7}
{2,4}
{2,4,8}
{1,3,5,6,8}
已知全集U={1,2,3,4,5,6,7,8,9},AU,BU,且A∩B={1,9},A∩B={2},(A)∩(B)={4,6,8},求A和B.
已知全集U={1,2,3,4,5},A={x|x2-6x+5=0,x∈R},BCUA,則集合B的個數(shù)是
A.5
B.6
C.7
D.8
湖北省互聯(lián)網(wǎng)違法和不良信息舉報(bào)平臺 | 網(wǎng)上有害信息舉報(bào)專區(qū) | 電信詐騙舉報(bào)專區(qū) | 涉歷史虛無主義有害信息舉報(bào)專區(qū) | 涉企侵權(quán)舉報(bào)專區(qū)
違法和不良信息舉報(bào)電話:027-86699610 舉報(bào)郵箱:58377363@163.com