问题
选择题
若集合M={-1,0,1,2},N={x|x(x-1)=0},则M∩N=( )
A.{-1,0,1,2}
B.{0,1,2}
C.{-1,0,1}
D.{0,1}
答案
∵集合M={-1,0,1,2},N={x|x(x-1)=0}={0,1},
∴M∩N={-1,0,1,2}∩{0,1}={0,1},
故选D.
若集合M={-1,0,1,2},N={x|x(x-1)=0},则M∩N=( )
A.{-1,0,1,2}
B.{0,1,2}
C.{-1,0,1}
D.{0,1}
∵集合M={-1,0,1,2},N={x|x(x-1)=0}={0,1},
∴M∩N={-1,0,1,2}∩{0,1}={0,1},
故选D.