So sánh đúng là A 2020/2021 > 2021/2022 B 2020/2021 = 2021/2022

14/15

So sánh đúng là

\(\frac{{2020}}{{2021}}\) > \(\frac{{2021}}{{2022}}\);

\(\frac{{2020}}{{2021}}\) = \(\frac{{2021}}{{2022}}\);

\(\frac{{2020}}{{2021}}\) < \(\frac{{2021}}{{2022}}\);

Không so sánh được.

Giải thích

Đáp án đúng là: C

Ta có: \(\frac{{2020}}{{2021}}\) + \(\frac{1}{{2021}}\) = 1; \(\frac{{2021}}{{2022}}\) + \(\frac{1}{{2022}}\) = 1;

Mà \(\frac{1}{{2021}}\) > \(\frac{1}{{2022}}\) nên \(\frac{{2020}}{{2021}}\) < \(\frac{{2021}}{{2022}}\)