1996 AIME Problems/Problem 7

Revision as of 15:52, 24 September 2007 by 1=2 (talk | contribs) (Solution)

Problem

Two squares of a $7\times 7$ checkerboard are painted yellow, and the rest are painted green. Two color schemes are equivalent if one can be obtained from the other by applying a rotation in the plane board. How many inequivalent color schemes are possible?

Solution

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