I went through the Combinatorics section. I find it difficult to interpret from the word problems the approach to be taken to solve it. For example, I am confused whether to use: 1. Variations with/without repetitions OR 2. Combinations with/without repetitions Is there a way to understand it better and choose?

Hey Manan, Thank you for your question! When solving such a problem, you need to answer the following questions: 1. Does the arrangement of the objects matter? Yes: Variations No: Combinations 2. Can we choose any of the objects more than once? Yes: Variations / Combinations with repetition No: Variations / Combinations without repetition Answering these questions will help you choose the correct function for your problem. Of course, practice makes perfect :) Hope this helps! Kind regards, 365 Hristina

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Manan Badani

Last answered:

19 May 2022

Posted on:

19 May 2022

Resolved: Knowing what to apply where

in Probability / Summary of Combinatorics

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Hristina Hristova

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Posted on:

19 May 2022

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Resolved: Knowing what to apply where

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