It is known that there are 52 cards in a pack of playing cards.
It is also known that there are 13 hearts in a pack.
It follows that the total number of outcomes is 52 and the number of favorable outcomes is 13.
Recall the Probability formula:
[tex]P=\frac{Number\text{ of favorable outcomes}}{Total\text{ number of outcomes}}[/tex]Substitute the values into the formula:
[tex]P=\frac{13}{52}=\frac{1}{4}[/tex]The required probability is 1/4.
