问题 选择题 在实数:-π3,(2)0,3.14,0.•1•5,0.020020002…中,无理数的个数是( )A.1个B.2个C.3个D.4个 答案 (2)0=1,所给数据中无理数有:-13π,0.020020002…,共2个.故选B.