Combinations in Discrete Mathematics with Examples
The transition from ordered sequences without repetitions to combinations without repetitions is simple - just remove the order. In this video, we present the expression used to calculate the number of combinations and demonstrate how it works using a couple of examples.
Timestamps
00:00 | Intro
00:39 | Review of Permutations with and without Repetitions
01:26 | Taking Order out of Permutations without Repetitions
06:39 | Example of 6 "choose" 3, i.e., 6C3
09:07 | Counting Number of 5-Card Hands from a Deck of 52
12:29 | Proving Corollary where nCr is the same as nC(n-r)
Hashtags
#counting #combination #factorial
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