6:45IMO 1962 Problem 4 | A trigonometry equation problem having 5 set of infinite solutionsSharpenyourbrain1.9K viewsView & Download
15:56The Hardest Mathematics Problem Ever Asked on the IMOEllie Sleightholm212.3K viewsView & Download
7:42Функциональное уравнение с IMO 1994 - задача 5!Математический привет с Аэрокоса103 viewsView & Download