[texhax] Typing out nPr (permutations)

Hubert Lam pstricks at tug.org
Tue Jun 16 08:44:59 CEST 2009

Does anyone know of a macro in (AMS)LaTeX that has the symbol for nPr?

I understand that \binom{n}{r} and its variants, but there seems to be 
nothing for nPr.

The manual (and perhaps clumsy) way I've been using is

$^n P_r$

Many thanks,


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