Overcounting: Difference between revisions
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== Examples == | == Examples == | ||
* | * [[2004 AIME I Problems/Problem 3|AIME 2004I/3]] | ||
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[[Category:Combinatorics]] | [[Category:Combinatorics]] | ||
Revision as of 06:54, 17 March 2008
Overcounting is the process of counting more than what you need and then systematically subtracting the parts which do not belong.
The Principle of Inclusion-Exclusion (PIE) is a systematic method of repeated overcounting that is a tool in solving many combinatorics problems.
Examples
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