问题
选择题
已知集合U={1,2,3,4,5,6,7},A={2,4,6},B={1,3,5,7},则A∩CUB等于( )
A.{2,4,6}
B.{1,3,5}
C.{2,4,5}
D.{3,5}
答案
因为集合U={1,2,3,4,5,6,7},A={2,4,6},B={1,3,5,7},
CUB={2,4,6}
则A∩(CUB)={2,4,6}∩{2,4,6}={2,4,6}.
故选A.
已知集合U={1,2,3,4,5,6,7},A={2,4,6},B={1,3,5,7},则A∩CUB等于( )
A.{2,4,6}
B.{1,3,5}
C.{2,4,5}
D.{3,5}
因为集合U={1,2,3,4,5,6,7},A={2,4,6},B={1,3,5,7},
CUB={2,4,6}
则A∩(CUB)={2,4,6}∩{2,4,6}={2,4,6}.
故选A.