JBMO 2022 - P4: A great combinatorics problem I coordinated !
34:17
Indian National Math Olympiad 2022 - Problem 2: A very nice combinatorics problem
19:37
Canada Math Olympiad 2016 - Problem 3: A cool medium-ish polynomial with integer coefficients
20:05
JBMO 2017 - Problem 3: My problem that passed to the JBMO!
4:54
The problem in Good Will Hunting - Numberphile
3:09
Titu Andreescu - Metroplex Math Circle
8:33
Рекордно ниски резултати на матурите - кой е виновен? - "Още нещо с Флора" - 12.06.2023 по БНТ
53:33
The hardest "What comes next?" (Euler's pentagonal formula)
10:27