已知全集U={1,2,3,4,5},集合A={1,3},B={3,4,5},则集合∁U(A∩B)=( ) A.{3} B.{4,5} C.{3,4,5} D.{1,2,4,5}
问题描述:
已知全集U={1,2,3,4,5},集合A={1,3},B={3,4,5},则集合∁U(A∩B)=( )
A. {3}
B. {4,5}
C. {3,4,5}
D. {1,2,4,5}
答
A={1,3},B={3,4,5}⇒A∩B={3};
所以CU(A∩B)={1,2,4,5},
故选D