Distributing N identical objects in P identical boxes || CAT || Permutation & Combination

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This video talks solves an example sum for distribution on N identical object to P identical boxes through balls and stick method.
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21c2 is distributing 19 identical chocolates over 3 distinct boxes. Here since the boxes too are identical we divide 21c2 by 3! Thanks for the video.

sasimeshari
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Your method is incorrect, the division by 3! holds true only when the number of objects in each box is distinct. For example, in the case of 5, 5, 4, you need to divide by 2!, hence division by 3! on the large would be incorrect.

sriraghavtanikella
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I think we have calculate manually in this problem you are applying beggers method which is not correct in this scenario.

adityakumarsinha
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How 3 identical boxes, 5 identical balls arranging ways is?

satyadevpaturi