collections and printing solutions

[cgnieder]

\documentclass{article}

\usepackage{xsim}

\DeclareExerciseCollection{test}
\xsimsetup{print-solutions/headings=false}

\begin{filecontents*}{testproblems.tex}
\begin{exercise}[ID=one]
  Exercise one.
\end{exercise}
\begin{solution}
  Answer one.
\end{solution}

\begin{exercise}[ID=two]
  Exercise two.
\end{exercise}
\begin{solution}
  Answer two.
\end{solution}

\begin{exercise}[ID=three]
  Exercise three.
\end{exercise}
\begin{solution}
  Answer three.
\end{solution}
\end{filecontents*}

\begin{document}

\collectexercises{test}
\input{testproblems.tex}
\collectexercisesstop{test}

\printrandomexercises[collection=test,exclude=two]{3}

\printsolutions

\end{document}