\(a)\) \(\dfrac{\text{1}995}{\text{1}996}\) và \(\dfrac{\text{1}996}{\text{1}997}\)
Ta có: \(\dfrac{\text{1}995}{\text{1}996}-\text{1}=\dfrac{\text{1}}{\text{1}996}\) và \(\dfrac{\text{1}996}{\text{1}997}-\text{1}=\dfrac{\text{1}}{\text{1}997}\)
Vì \(\dfrac{\text{1}}{\text{1}996}>\dfrac{\text{1}}{\text{1}997}\) nên \(\dfrac{\text{1}995}{\text{1}996}< \dfrac{\text{1}996}{\text{1}997}\)