\documentclass{article}
\usepackage[separateanswersheet]{automultiplechoice}

\usepackage[font=scriptsize]{caption}


\newcommand{\ncopies}{1}
\newcommand{\seed}{11072014}

\begin{document}

\AMCrandomseed{\seed}
% grading factor 3 to 1 (resta en cada equivocada)
%\scoringDefaultS{v=0,e=-1/3,m=-1/3,b=1}

\element{geographie}{
  \begin{question}{Paris}
    In which continent is Paris?
    \begin{choices}
      \correctchoice{Europe}
      \wrongchoice{Africa}
      \wrongchoice{Asia}
      \wrongchoice{planet Mars}
    \end{choices}
  \end{question}
}

\element{geographie}{
  \begin{question}{Cameroon}
    Which is the capital city of Cameroon?
    \begin{choices}
      \correctchoice{Yaoundé}
      \wrongchoice{Douala}
      \wrongchoice{Abou-Dabi}
    \end{choices}
  \end{question}
}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\onecopy{\ncopies}{
  % header
  \small
  \insertgroup{geographie}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  \cleardoublepage

  \AMCform
}%end \onecopy

\end{document}