Difference between revisions of "Constructive counting"
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| − | In [[combinatorics]], '''Constructive counting''' is a counting method where one "constructs" a set to count it. This strategy is useful for complicated counting or combinatorics questions, as the problem can be broken down into cases, the number of possibilities in each case can be computed, and those numbers can be summed to find the final answer. | + | In [[combinatorics]], '''Constructive counting''' is a [[counting]] method where one "constructs" a set to count it. This strategy is useful for complicated counting or combinatorics questions, as the problem can be broken down into cases, the number of possibilities in each case can be computed, and those numbers can be summed to find the final answer. |
== Examples == | == Examples == | ||
Revision as of 15:36, 18 May 2021
In combinatorics, Constructive counting is a counting method where one "constructs" a set to count it. This strategy is useful for complicated counting or combinatorics questions, as the problem can be broken down into cases, the number of possibilities in each case can be computed, and those numbers can be summed to find the final answer.
Examples
This video is a great introduction to permutations, combinations, and constructive counting: https://www.youtube.com/watch?v=t6a4uHEwQnM&t=1868s
See also
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