Khan Academy Static

In this lesson we construct snakes using permutations and develop a powerful counting tool: the binomial coefficient. This lesson takes 45-60 minutes to complete.

18003_3_Calculating_factorials.html

18002_2_Snake_bots.html

18004_4_Casting_problem.html

18005_5_Does_order_matter_.html

18001_1_Two_headed_robots.html

18006_6_Binomial_coefficient.html