Rachel
About
Khan Academy on a Stick
Combinations
Introduction to combinations
Permutations and combinations
Permutations
Combinations
Example: Ways to arrange colors
Example: 9 card hands
Example: Ways to pick officers
Your browser does not support video. Please get the latest version of Google Chrome, Firefox, IE, or Safari. Alternately, you can try the link below if you have VLC or another media player installed.
If the above player doesn't work, you can
try this direct link
.