From the IMO shortlist.
18:47
a nice floor problem from the IMO long list.
19:03
have you seen this approach to means??
24:36
Fabian und Lutz stellen die Vertrauensfrage XXL | heute-show Spezial Nachschlag
20:34
which method do you prefer??
26:43
can you do the hardest problem from the European Mathematical Cup??
19:06
¡La integral trigonométrica más genial!
19:26
Zeta Function and Eta Function
13:16