\newproblem{\estraialfa{3}{a,b,c,x,y,z}{element}
\FPsetpar{a}{2}{5}
\item \PTs{1} exercise 11a
\[\left\{\elementi, \; \elementii,\; \elementiii\right\}\]
  \begin{answers}{1}\bChoices[random]
    \Ans1 answer 1 correct\eAns
    \Ans0 answer 2 wrong\eAns
    \Ans0 answer 3 wrong\eAns
    \eChoices\end{answers}}
\newproblem{\estraialfa{3}{a,b,c,x,y,z}{element}
\FPsetpar{a}{2}{5}
\item \PTs{1} exercise 11b
\[\left\{\elementi, \; \elementii,\; \elementiii\right\}\]
  \begin{answers}{1}\bChoices[random]
    \Ans1 answer 1 correct\eAns
    \Ans0 answer 2 wrong\eAns
    \Ans0 answer 3 wrong\eAns
    \eChoices\end{answers}}

