问题
选择题
已知集合A={1,3,5,7,9},B={0,3,6,9,12},则A∪B=( )
A.{0,1,5,6,7,12}
B.{3,9}
C.{0,1,3,5,6,7,9,12}
D.{3,6}
答案
根据并集的定义,A∪B={0,1,3,5,6,7,9,12}.
故选C
已知集合A={1,3,5,7,9},B={0,3,6,9,12},则A∪B=( )
A.{0,1,5,6,7,12}
B.{3,9}
C.{0,1,3,5,6,7,9,12}
D.{3,6}
根据并集的定义,A∪B={0,1,3,5,6,7,9,12}.
故选C