Let $\mathrm{X}=\left\{(\mathrm{x}, \mathrm{y}) \in \mathbb{Z} \times \mathbb{Z}: \frac{\mathrm{x}^2}{8}+\frac{\mathrm{y}^2}{20}<1\right.$ and $\left.\mathrm{y}^2<5 \mathrm{x}\right\}$. Three distinct points $P, Q$ and $R$ are randomly chosen from $X$. Then the probability that $P, Q$ and $R$ form a triangle whose area is a positive integer, is