Overcounting

Revision as of 07:54, 17 March 2008 by 1=2 (talk | contribs) (Examples)

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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