Appendix 3: Counting, Permutations and Combinations

In probability experiment, counting the number of outcomes in a trial or the total number of all possible outcomes is essential.

Adapted from Python for Introductory Statistics, by Simon Aman (Truman College, City Colleges of Chicago), licensed under CC BY 4.0. Changes were made: reformatted as an accessible XYZ web edition with live in-browser code cells. License: CC-BY-4.0.