Irreducible Fractions
Author: mathforces
Problem has been solved: 87 times
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Find the number of irreducible fractions among $\frac{1}{2021}$, $\frac{2}{2021}$, ..., $\frac{2021}{2021}$.
Найдите количество несократимых дробей среди $\frac{1}{2021}$, $\frac{2}{2021}$, ..., $\frac{2021}{2021}$.
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