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National Math Olympiad 2016 Question 7
Posted: Thu Feb 25, 2016 5:58 pm
by sadmannasif665
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Re: National Math Olympiad 2016 Question 7
Posted: Fri Aug 05, 2016 10:15 am
by Zawadx
This is actually a well-known problem. There's even a Numberphile video on it:
Problem video:
https://www.youtube.com/watch?v=ZWib5olGbQ0
Mathematical explanation:
https://www.youtube.com/watch?v=XIOoCKO-ybQ
The BdMO question also outlines all the steps, so you could try to just solve by doing it like an exercise :/