The Legend of Question Six
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Simon Pampena discusses the famous Question 6 from the 1988 International Mathematical Olympiad.
Second part of this video: https://youtu.be/L0Vj_7Y2-xY
International Mathematical Olympiad (includes links to all previous Olympiad results and papers): https://www.imo-official.org
Simon Pampena: https://twitter.com/mathemaniac
Terence Tao: http://www.math.ucla.edu/~tao/ (thanks to him for the photos)