Moser's circle problem

Common card · No. 405392

Moser's circle problem asks how many regions a circle can be divided into by choosing n {\displaystyle n} points along the circumference of the circle and joining each pair of points by a straight line. The greatest possible number of regions with n {\displaystyle n} points is given by r G = ( n 4 ) + ( n 2 ) + 1 = 1 24 ( n 4...