3.45<()<()<()<()<()<()<3.49在括号里添上小数

3.45<3.46<3.465<3.47<3.475<3.48<3.486<3.49

有很多种填法，我写其中一种

3.45<3.46<3.465<3.47<3.475<3.48<3.485<3.49

3.45<3.46<3.47<3.48<3.481<3.482<3.489<3.49

3.45<(3.456)<(3.46)<(3.465)<(3.7)<(3.75)<(3.8)<3.49

3.45<3.455<3.460<3.464<3.468<3.475<3.480<3.49

1.3.45<3.46<3.461<3.462<3.463<3.469<3.47<3.49
2.3.45<3.461<3.462<3.463<3.489<3.4899999<3.49
3.3.45<3.489<3.4899<3.48999999<3.489999999<3.48999999999<3.489999999999999<3.49
4.3.45<3.48991<3.489992<3.48999993<3.489999999994<3.48999999999999995<3.48999999999999999999999999999999999999999999999<3.49