File: exer7-16.tex

package info (click to toggle)
texlive-lang 2016.20170123-5
  • links: PTS
  • area: main
  • in suites: stretch
  • size: 1,093,148 kB
  • ctags: 15,901
  • sloc: perl: 46,074; xml: 29,603; makefile: 5,248; sh: 3,179; python: 2,949; ansic: 2,846; ruby: 945; lisp: 726; awk: 636; java: 159; sed: 142; cpp: 12
file content (11 lines) | stat: -rw-r--r-- 304 bytes parent folder | download | duplicates (11) 
1
2
3
4
5
6
7
8
9
10
11
 
\documentclass{article}
\begin{document}
\noindent
The total number of permutations of $n$ elements taken $m$ at a time
(symbol $V_n^m$) is
\vspace{-0.5ex}
\[ V_n^m = \prod_{i=0}^{m-1}(n-i) = 
  \underbrace{n(n-1)(n-2)\ldots(n-m+1)}_{\mbox{total of $m$ factors}} =
  \frac{n!}{(n-m)!} \]
\end{document}