IMO Shortlist 1966 problem 14
Dodao/la:
arhiva2. travnja 2012. What is the maximal number of regions a circle can be divided in by segments joining
![n](/media/m/a/e/5/ae594d7d1e46f4b979494cf8a815232b.png)
points on the boundary of the circle ?
Posted already on the board I think...
%V0
What is the maximal number of regions a circle can be divided in by segments joining $n$ points on the boundary of the circle ?
Posted already on the board I think...
Izvor: Međunarodna matematička olimpijada, shortlist 1966