Resolved: Knowing what to apply where
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