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seen Dec 13 '12 at 17:24

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awarded  Supporter
Nov
25
comment Combinatorial Proof Of Binomial Double Counting
Can what you say be considered a proof though? I just really don't know what constitutes a proof.
Nov
25
comment Combinatorial Proof Of Binomial Double Counting
Logically that makes sense but is there some way of proving this with more than just because it makes sense.
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25
awarded  Student
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asked Combinatorial Proof Of Binomial Double Counting