TeX source:

\begin{align*} \begin{array}{l|llllll} \text { Outcome } & 1 & 2 & 3 & 4 & 5 & 6 \\ \hline \text { Probablity } & \frac{1}{12} & p & p & p & p & \frac{3}{12} \end{array} \end{align*}