MathForces: Math Olympiads
MathForces - Math Olympiadsβeta
Login Register

Lin's Octagon

Author: mathforces
Problem has been solved: 39 times

Русский язык | English Language

Lin randomly selected three different vertices of some regular octagon. Let the irreducible fraction $ \frac{n}{m} $ be the probability that some of the sides of the formed triangle coincides with some side of the original octagon. Find the value of $ | n + m | $.

Lin's Octagon

Sorry, you need to login into your account