2010020207

We draw a card from a Spanish deck of $40$ cards and we consider the events: $\mathrm{A}$ "Draw an even number," and $\mathrm{B}$ "Draw a card greater than $5$." What is the probability of the $\mathbf{\text{union}}$ of events $\mathrm{A}$ and $\mathrm{B}$ $(\mathrm{A}\cup \mathrm{B})$? Recall briefly Spanish $40$ card deck: each of four suits (colors) contains $1$, $2$, $3$, $4$, $5$, $6$, $7$, Jack $(10)$, Horse $(11)$ and King $(12)$.