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Matematika oktatási portál
A. 645. Do there exist infinitely many (not necessarily convex) 2015-gons in the plane such that every three of them have a common interior point, but no four have a common point?
Deadline expired on 10 June 2015.
Statistics on problem A. 645. 2 students sent a solution.
1 point:1 student.
0 point:1 student.