Answer
$ The\ Answer\ of\ b\ is: $
\begin{equation}
\begin{array}{l}{12,3,6,8,2,5,7} \\ {7,3,6,8,2,5,12} \\ {7,3,6,5,2,8,12} \\ {2,3,6,5,7,8,12} \\ {2,3,5,6,7,8,12}\end{array}
\end{equation}
Work Step by Step
$ The\ Answer\ of\ b\ is: $
\begin{equation}
\begin{array}{l}{12,3,6,8,2,5,7} \\ {7,3,6,8,2,5,12} \\ {7,3,6,5,2,8,12} \\ {2,3,6,5,7,8,12} \\ {2,3,5,6,7,8,12}\end{array}
\end{equation}
