Question

If you randomly select a card from a well-shuffled standard deck of 52 cards, what is the probability that the card you select is a 7 or 5? (Your answer must be in the form of a reduced fraction.)

Answer 1

In a deckk of 52 cards there are four 5 and four 7, so the probability to select randomly a 5 or a 7 is:

`\begin{gathered} \text{prob}=\frac{success\text{ cases}}{total\text{ cases}} \\ \text{prob}=(8)/(52)=(2)/(13) \end{gathered}`

The probability is 2/13