A significant majority (24 out of 28) of gold and silver medalists achieved a perfect score on Problem 1, confirming its low difficulty.
For further analysis, you can explore the full JBMO 2015 solutions and commentaries provided by the Viitori Olimpici platform. JBMO 2015 Problems and Solutions | PDF | Mathematics Comentarii JBMO 2015
for positive real numbers. The minimum value was found to be 3. A significant majority (24 out of 28) of
The competition consisted of four problems covering algebra, number theory, geometry, and combinatorics. Comentarii JBMO 2015
This problem involved minimizing a specific expression given the constraint