Turkey TST 2017 P9
Source: Turkey TST 2017 P9
June 1, 2017
TurkeyTSTcombinatorics
Problem Statement
Let be a set of finite number of points in the plane any 3 of which are not linear and any 4 of which are not concyclic. A coloring of all the points in to red and white is called discrete coloring if there exists a circle which encloses all red points and excludes all white points. Determine the number of discrete colorings for each set .