O
o0o...o...o0o
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
So sánh hai phân số sau :
$A = 10^{19} + \dfrac{1}{10^{20}} + 1 \ và \ B = 10^{20} + \dfrac{1}{10^{21}} + 1$
$A = 10^{19} + \dfrac{1}{10^{20}} + 1 \ và \ B = 10^{20} + \dfrac{1}{10^{21}} + 1$
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