问题
选择题
设U={1,2,3,4,5},A={1,5},B={2,4},则B∩∁UA=( )
A.{2,3,4}
B.{2}
C.{2,4}
D.{1,3,4,5}
答案
∵U={1,2,3,4,5},A={1,5},
∴∁UA={2,3,4},又B={2,4},
则(∁UA)∩B={2,4}.
故选:C.
设U={1,2,3,4,5},A={1,5},B={2,4},则B∩∁UA=( )
A.{2,3,4}
B.{2}
C.{2,4}
D.{1,3,4,5}
∵U={1,2,3,4,5},A={1,5},
∴∁UA={2,3,4},又B={2,4},
则(∁UA)∩B={2,4}.
故选:C.