\item\begin{enumerate}
\item Two tickets are drawn at random without replacement from the box

\begin{picture}(86,11)(0,5)
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\put(0,0){\line(1,0){84}}
\put(84,0){\line(0,1){18}}
\put(06,6){\fbox{1}}
\put(26,6){\fbox{2}}
\put(46,6){\fbox{3}}
\put(66,6){\fbox{4}}
\end{picture}.

\begin{enumerate}
\item Find the chance that the second ticket is 4.
\item Find the chance that the second ticket is 4, given the first is 2.
\item Find the chance that the second ticket is 4, given the first is 4.
\end{enumerate}
\item Find the same three chances, if the draws are made with replacement.
\end{enumerate}
