Swedish Mathematics Olympiad | 2002 Question 4
15:42
International Math Olympiad | 1998 Question 4
18:33
Croatian Mathematical Olympiad | 2005 Q11.1
18:08
a super nice functional equation
15:30
Turkish Mathematical Olympiad | 2009 Q1
24:20
Too hard for the IMO? Too easy?
10:00
O blog bizarro que ensinou matemática a todos
9:36
‘Why in God’s name should Trump get a thank you?’: Fmr. Russia ambassador shreds Vance over Ukraine
3:25:28