perplexus.info :: Just Math : Sweet Sixteen

Sweet Sixteen (Posted on 2005-06-12)

16 checkers are placed on an 8 by 8 checkerboard, no two checkers on the same square. Show that some four of the 16 checkers are on the vertices of a parallelogram with positive area.

See The Solution Submitted by McWorter

Rating: 4.0000 (1 votes)

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oops

| Comment 10 of 11 |

haha i should have written "at least". but we'll still end up with at least 8.

Posted by Tan Kiat Chuan on 2005-07-31 19:17:36

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