a hidden triangle...
9:44
two number theory problems
13:08
Did I make this too hard?
20:08
A number theory problem from Morocco!
20:14
Irish Math Olympiad | 2009 Question 3
12:52
A very classic number theory problem
21:43
El Libro RUSO Más TERRIBLE del Cálculo HUMILLA a ChatGPT (Demidovich)
13:26
A Fun One from the Vietnamese IMO
14:19