问题
选择题
已知集合A={x|-1≤x≤2,x∈Z},集合B={0,2,4},则A∪B 等于( )
A.{-1,0,1,2,4}
B.{-1,0,2,4}
C.{0,2,4}
D.{0,1,2,4}
答案
∵集合A={x|-1≤x≤2,x∈Z}={-1,0,1,2},
集合B={0,2,4},
∴A∪B={-1,0,1,2,4}.
故选A.
已知集合A={x|-1≤x≤2,x∈Z},集合B={0,2,4},则A∪B 等于( )
A.{-1,0,1,2,4}
B.{-1,0,2,4}
C.{0,2,4}
D.{0,1,2,4}
∵集合A={x|-1≤x≤2,x∈Z}={-1,0,1,2},
集合B={0,2,4},
∴A∪B={-1,0,1,2,4}.
故选A.