Wikipedia:Reference desk/Archives/Mathematics/2007 July 25

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[edit] July 25

Sorry to give such a mundane annoying question, but does anybody recognise this formula? (the letters I have put in are meaningless)

$\mathrm{k} = \frac{\mathrm{m}!}{\mathrm{n}! \times (\mathrm{m} - \mathrm{n})!}$

thank you. Philc 14:26, 25 July 2007 (UTC)

Yes, of course. This is the binomial coefficient. -- Meni Rosenfeld (talk) 14:30, 25 July 2007 (UTC)

Thanks very much, I knew I should recognise it! Philc 15:28, 25 July 2007 (UTC)