MathDB
Problem 1

Source: Azerbaijan third round 2020

June 6, 2020
number theorycombinatorics

Problem Statement

1313 fractions are corrected by using each of the numbers 1,2,...,261,2,...,26 once.Example:125,1826....\frac{12}{5},\frac{18}{26}.... What is the maximum number of fractions which are integers?
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