On Mon, 2009-01-12 at 13:32 +0100, Eike Rathke wrote:
> Hi Andreas,
>
> On Sunday, 2008-12-21 16:32:49 -0700, Andreas J. Guelzow wrote:
>
> > > - PERMUT() formula corrected.
> >
> > How is this any more corect than before? What is "P subscript k,n" or
> > P(n,k) anyways?
>
> Isn't that the usual convention to write P(n,k)=n!/(n-k)! for this
> probability?
>
> > SHouldn't that expression be not just deleted?
> > Especially if there appears to be an argument about whetehr it is
> > "correct" or not.
>
> Should I better remove P(n,k) and keep the rest?
n!/(n-k)! has only one meaning. Whether P(n,k) is the "usual" convention
depends on your discipline. I think nPk and the twodimensional binomial
with n written above k are at least as common.
So removing the P(n,k) and keeping the rest might be a good idea.
Andreas
