\begin{align*} P(\text{kth}) & = P(\text{LL...LA})\\ & = \frac{14 \cdot 13 \cdot ... \cdot (15-k) \cdot 1}{15 \cdot 14 ... \cdot (16-k) \cdot (15-k)} = \frac{1}{15} \end{align*}
in-context