National Math Olympiad 2016 Question 7

For students of class 9-10 (age 14-16)
sadmannasif665
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National Math Olympiad 2016 Question 7

Unread post by sadmannasif665 » Thu Feb 25, 2016 5:58 pm

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Zawadx
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Re: National Math Olympiad 2016 Question 7

Unread post by Zawadx » Fri Aug 05, 2016 10:15 am

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 :/

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