How to calculate Permutations on the TI-84 plus how to convert scientific notation on the calculator.
How to calculate Combinations on the TI-84.
Using classpad.net to calculate permutations, combinations and factorials. Remember to create a new paper and then follow the instructions on the video.
A nice Geogebra applet to calculate permutations and combinations with n up to 25. https://www.geogebra.org/m/y7hj9m8z