Understanding Permutations vs Combinations | Part 1

This video is the first of two that describes the difference between a permutation and combination. We discuss both intuition and derivation of the formulas.

Part 1 builds the generic/simple permutation case and the advanced permutation case. Both formulas are derived with an example.

Part 2 shifts to combinations. First, scenarios are discussed on when to use which. Next, the same example from part 1 is extended. Finally, the formula is derived from the permutation formula.

0:00 introduction
0:32 simple permutation
0:44 runner's podium example
1:52 formula derivation from probability math
2:20 factorial introduction

2:34 factorial special cases
2:50 advanced permutation
3:20 example setup
4:12 specific formula

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