 % This file is public domain
\documentclass[a4paper]{article}

\usepackage{probsoln}
 %uncomment the following line to display the answers
 %\showanswers

 % Set the academic year to be 2011/12 (if omitted assume current
 % academic year):
 \SetStartYear{2011}

 % Set the seed for the random number generator:
 \PSNrandseed{\GetStartYear}

 % Exclude problems that have been used this year or the previous
 % two academic years. (Creates a file called 'excluded.tex' to
 % store labels of used problems. Also creates a file called
 % \jobname.prb that stores labels of problems used in this 
 % document, so they don't get excluded on subsequent runs.)
 \ExcludePreviousFile[3]{excluded}

 % To clear the used problems file (\jobname.prb) of the labels 
 % generated in the previous run, comment the above and uncomment
 % below:
 % \ClearUsedFile{excluded}

 % Load 1 problem randomly selected from the given file
 % and store in database 'firstprinciples':
\loadrandomproblems[firstprinciples]{1}{prob-1stprncp}

 % Load 5 problems randomly selected from the given file
 % and store in database 'easy':
\loadrandomproblems[easy]{5}{prob-easy}

 % Load 2 problems randomly selected from the given file
 % and store in database 'implicit':
\loadrandomproblems[implicit]{2}{prob-implicit}

 % Load 2 problems randomly selected from the given file
 % and store in database 'probspaces':
\loadrandomproblems[probspaces]{2}{prob-probspaces}

 % Load 1 problem randomly selected from the given file
 % and store in database 'mchoice':
\loadrandomproblems[mchoice]{1}{prob-mchoice}

 % Load 1 problem randomly selected from the given file
 % and store in database 'nosoln':
\loadrandomproblems[nosoln]{1}{prob-nosoln}


\begin{document}
\title{Sample Problem Sheet}
\author{Nicola Talbot}
\maketitle

\begin{enumerate}
 % Differentiation from first principles
 \foreachproblem[firstprinciples]{\item \thisproblem}

\item Differentiate the following functions:
\begin{enumerate}
  \foreachproblem[easy]{\item \thisproblem}
\end{enumerate}

 % Implicit differentiation
\foreachproblem[implicit]{\item \thisproblem}

 % Finite probability spaces
\foreachproblem[probspaces]{\item \thisproblem}

 % Multiple choice question
\foreachproblem[mchoice]{\item \thisproblem}

 % select one essay style question that doesn't come with a solution

\foreachproblem[nosoln]{\item \thisproblem}
\end{enumerate}
\end{document}
