An octagonal die with letters $\mathrm{A}, \mathrm{B}, \mathrm{C}, \mathrm{D}, \mathrm{D}, \mathrm{E}, \mathrm{C}, \mathrm{A}$ written on its faces is rolled once. Find the probability that the letter that turns up is $\mathrm{A}$.

In a box, there are $15$ cards with numbers $1$ to $15$. A card is selected at random from the box. Find the probability of getting a composite number.

(Write the answer in the simplest form of a fraction)