Question

已知集合M={0,1,2},N={x|x=2a,a∈M},則集合M∩N等于

A.{0}                                                       B.{0,1}

C.{1,2}                                                    D.{0,2}

Answer 1

解析：∵N={x|x=2a,a∈M}={0,2,4},

∴M∩N={0,1,2}∩{0,2,4}={0,2}.

答案：D