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BdMO Online Forum • View topic - National Math Olympiad 2016 Question 7

National Math Olympiad 2016 Question 7

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

Post Number:#1  Unread postby sadmannasif665 » Thu Feb 25, 2016 5:58 pm

image-768bbf84800265b3056d6a7499d5dc6ef5e8e34a11a61dd15da615b60e496b71-V.jpg
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image-768bbf84800265b3056d6a7499d5dc6ef5e8e34a11a61dd15da615b60e496b71-V.jpg
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sadmannasif665
 
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Re: National Math Olympiad 2016 Question 7

Post Number:#2  Unread postby 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 :/
Zawadx
 
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