Find the number of trapeziums that it can be formed with the vertices of a regular polygon.
(In reply to
re: Repeat! by K Sengupta)
I don't even remember seeing it in the queue. The pid of 14040 is newer than the problems that Danish has in the current queue.
I'm not on every day, and this seems like one that others okayed and someone chose to immediately push for a morning puzzle, all while I was not looking.