问题
选择题
设全集U={0,1,2,3,4},集合A={1,2,3},集合B={2,3,4},则A∩∁UB=( )
A.{1}
B.{0,1}
C.{0,1,2,3}
D.{0,1,2,3,4}
答案
∵全集U={0,1,2,3,4},
集合A={1,2,3},
集合B={2,3,4},
∴A∩∁UB={1,2,3}∩{0,1}
={1}.
故选A.
设全集U={0,1,2,3,4},集合A={1,2,3},集合B={2,3,4},则A∩∁UB=( )
A.{1}
B.{0,1}
C.{0,1,2,3}
D.{0,1,2,3,4}
∵全集U={0,1,2,3,4},
集合A={1,2,3},
集合B={2,3,4},
∴A∩∁UB={1,2,3}∩{0,1}
={1}.
故选A.