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Posts tagged combinatorics

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Q&A organizing a library

1 answer  ·  posted 3mo ago by msh210‭  ·  last activity 3mo ago by celtschk‭

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Q&A How's it possible to arrange 0 objects? How can 0! = 1?

3 answers  ·  posted 11mo ago by DNB‭  ·  edited 11mo ago by Quintec‭

Question combinatorics
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