Several circles are drawn on a piece of paper to form several regions on the paper. We wish to color these regions such that no two regions that share a common boundary would have the same color.
(It is okay if two regions that share a common point to have the same color, but not boundary)
How many colors minimum are needed?
Showing posts with label intersect. Show all posts
Showing posts with label intersect. Show all posts
Wednesday, October 21, 2009
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