Difference between revisions of "NCR"
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| − | ''n''C''r'' | + | The number of ways of choosing "r" objects from "n" is written ''n''C''r''. Joyce uses small caps for N and R though by the first half of the 20th century variables were invariably written in italics. |
Revision as of 09:37, 19 July 2011
The number of ways of choosing "r" objects from "n" is written nCr. Joyce uses small caps for N and R though by the first half of the 20th century variables were invariably written in italics.
