Overcounting

Revision as of 21:43, 9 November 2006 by Bpms (talk | contribs) (Added a little info.)

Overcounting is the process of counting more than what you need and then systematically subtracting the parts which do not belong. The property of Inclusion and Exclusion (PIE) is a commonly used method that is a tool in solving many combinatorics problems.

Examples

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