September 26, 2019

Today’s theme was enumerative combinatorics, which deals with counting things; typically, the number of ways that certain patterns can be formed.
Some typical basic strategies that are used to solve this type of problems are:

  • Sum rule
  • Product rule
  • Recursion
  • Counting by bijection, or counting the same objects in two different ways
  • Principle of inclusion and exclusion

Click here for the worksheet.

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