Difference Between Permutations and Combinations | Discrete Math Exercises

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We calculate permutations and combinations, their meanings and their differences, and we will use the permutation formula and combination formula to solve come counting problems. We'll also go over permutations with repetition and combinations with repetition. #discretemathematics

00:00 Intro
00:33 Permutations
02:25 Combinations
04:38 Permutation Example with Repetition
06:35 Permutation Example without Repetition
08:20 Permutations on a Calculator
09:10 Second Permutation Example
10:58 Combination Example without Repetition
13:02 Combination Example with Repetition
14:06 Combinations on a Calculator

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CORRECTION AT 13:51 - I accidentally added 4 twice. Sorry about that. n + r - 1 is 8 + 4 -1 = 11. It should be 11C4 = 330.
Thanks @Sport Master for pointing this out.

WrathofMath
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Just sees you 2 years old video power set very help full thx
Form India

gulamnabikagathala
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I have a test tomorrow and this helped so much!

rubym
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Mistake in the final example Sir. Should be 11C4 I think. Great video!

sportmaster
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Your videos, including the ones on set equality proofs, are excellent! Very underrated channel. Thank you and hope you get more recognition/subs!

AnalystQ
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combinations always confused me because "order does not matter" -- but for combination locks order DOES matter

firstname
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What calculator program is that? Mine is not as user friendly

ABagofDeadSquirrels