Question

So sánh:

2017/2018

2018/2019

2019/2020

Answer 1

Ta có:

\(1-\frac{2017}{2018}=\frac{1}{2018};1-\frac{2018}{2019}=\frac{1}{2019};1-\frac{2019}{2020}=\frac{1}{2020}\)

Vì \(\frac{1}{2018}>\frac{1}{2019}>\frac{1}{2020}\)nên \(\frac{2017}{2018}< \frac{2018}{2019}< \frac{2019}{2020}\)

Answer 2

2017/2018 = (2018-1)/2018 = 1-1/2018

2018/2019 = (2019-1)/2019 = 1 - 1/2019

2019/2020 = (2020-1)/2020 = 1 - 1/2020

Có 1/2018 > 1/2019 > 1/2020 => 2017/2018 < 2018/2019 < 2019/2020