i am not getting , why m is put = to n-k ???
Marbles, explaination doubt
I am attaching more of mathematical reasoning, which would be more intuitive and easy to understand ig.
If you are still not getting it, feel free to ask.
You can watch some videos on star and bars method to get the hang of it. Deduction of the formula used (star and bars) is covered in the videos, and I have used the same.
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