On Fri, Feb 12, 2010 at 2:17 AM, Alex Gian <[email protected]> wrote: > How would I go about, then, making an nPr verb, where nPr is nCr * r! > I can do it in two steps, if I first bond n to nCr, eg, 14P3 -> > n14Cr =: 14&nCr > (! * n14cr) 3
That comes up so often there's a builtin for it by the way. 14 (^!._1) 3 2184 Ambrus ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
