\begin{question}
Which of these institutions already hosted a useR! conference?
\begin{answerlist}
  \item National Institute of Standards and Technology
  \item Agrocampus Ouest
  \item Technische Universit\"at Dortmund
  \item Universit\"at Wien
  \item ETH Z\"urich
  \item K{\o}benhavns Universitet
\end{answerlist}
\end{question}

\begin{solution}
The list of useR! (and DSC) hosts can be found at \url{https://www.R-project.org/conferences/}.
\begin{answerlist}
  \item True. useR! 2010 was hosted at NIST.
  \item True. useR! 2009 was hosted at Agrocampus Ouest, Rennes.
  \item True. useR! 2008 was hosted at TU Dortmund.
  \item False. Universit\"at Wien did not host an R conference yet (only TU Wien and WU Wien).
  \item False. ETH Z\"urich did not host an R conference yet.
  \item False. K{\o}benhavns Universitet hosted DSC but not useR!.
\end{answerlist}
\end{solution}

\exname{useR! conferences}
\extype{mchoice}
\exsolution{111000}
\exshuffle{5}