Answer
$ The\ Answer\ of\ a\ is: $
\begin{equation}
\begin{array}{r}{\text 4,8,2,6} \\ {4,6,2,8} \\ {4,2,6,8} \\ {2,4,6,8}\end{array}
\end{equation}
Work Step by Step
$ The\ Answer\ of\ a\ is: $
\begin{equation}
\begin{array}{r}{\text 4,8,2,6} \\ {4,6,2,8} \\ {4,2,6,8} \\ {2,4,6,8}\end{array}
\end{equation}
