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\begin{center}
{\large\textbf{Dartmouth College}\\
Mathematics 25}
\end{center}
\begin{center}
Assignment 5\\
due Wednesday, October 28
\end{center}

\begin{enumerate}

\item Show that 91 is a pseudoprime to the base 3.

\item  Show that 25 is a strong pseudoprime to the base 7.

\item Show that 1387 is a pseudoprime to the base 2, but not a strong
  pseudoprime to the base 2.

\end{enumerate}

\end{document}