shezleng
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counting triangles
in Brain Teasers and Puzzles
Posted
there are N points on a paper. any three of points are not colinear.
you draw lines from each point to all other points.lines can be drawn with three colors; red,yellow or blue.
there will be obtained some triangles having colored edges.
purpose is not to get a triangle, edges of which are drawn with the same color.
what can be the value N at maximum?