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Explanation with several examples to learn when the order matters or does not matter in a combinatorics exercise: combinations, permutations or variations. Complete Course on Combinations, Permutations and Variations: • Combinations, Permutations and Variations... _________________________________________________________________ If you want to help me so that the channel continues to grow you can: Subscribe: https://www.youtube.com/matematicaspr... Contribute to the channel with a donation: https://www.paypal.me/profeAlex Become a member of the channel: https://www.youtube.com/matematicaspr... _________________________________________________________________ Visit my website: https://www.MatematicasProfeAlex.com Follow me on my social networks: Facebook: / matematicasprofealex Instagram: / matematicasprofealex Contact Only business, press: [email protected] 0:00 Greeting 0:24 Concepts that you should know 1:44 First example 5:44 Second example 8:35 Third example 11:19 Fourth example 13:21 Fifth example 15:50 Sixth example 17:52 Seventh example 19:34 Last example 20:05 Farewell and recommended videos