Rachel
About
Khan Academy on a Stick
Permutations
Introduction to permutations
Permutations and combinations
Permutations
Combinations
Example: Ways to arrange colors
Example: 9 card hands
Example: Ways to pick officers
Your browser does not support Flash or HTML5 video. You can:
upgrade your browser
install Flash
try this direct link
If the above player doesn't work,
try this direct link
.