L9A
00:25 Principles of counting
04:45 Ordered selections with repetition
07:45 Examples
11:40 Ordered selections without repetition
L9B
00:00 Examples
03:20 Permutations
06:00 Example
11:00 Factorial
13:50 Example
20:30 Unordered selections without repetition
L9C
00:00 Unordered selections without repetition (cont.)
03:00 Binomial coefficient
05:25 Example
11:40 Property
L9D
00:00 Property (cont.)
01:50 Binomial theorem
11:30 Examples