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\documentclass{article}
\usepackage[tight,designv]{web}
\usepackage{insdljs}
\usepackage[testmode,quiet]{rangen}
\parindent0pt\parskip6pt
\begin{document}
\RandomR{\a}{-2.3}{2.3}\a
\RandomL{\a}{17,\rPI,3/4,\rE,88,1/2}
Choose at random a number from the list \verb!{17,\rPI,3/4,\rE,88,1/2}!:
The choice is $\texttt{\a}$
\rule{\linewidth}{.4pt}
\defineR{\a}{-4.5}\defineR{\b}{5.343}
\RandomR[round=2,showzeros]{\c}{\a}{\b}
Random Real from the interval \texttt{[\a, \b ]} is \texttt{\c}
\RandomR[round=2]{\a}{0}{10}\RandomR[round=2]{\b}{0}{12}
\RandomR[round=2]{\c}{\a}{\b}
A random Real taken from a random interval \texttt{[\a, \b ]} is \texttt{\c}
\rule{\linewidth}{.4pt}
\RandomR[round=2,showzeros]{\b}{0}{9.5}
\RandomR[round=2]{\a}{-3}{\b}
We require \verb!\b! to be greater than \texttt{\string\a}:
$ \texttt{\string\b=\b} > \texttt{\a=\string\a} $
$\texttt{\string\a}=\a\approx\nOf{\a}/\dOf{\a}$
\end{document}
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