Question #b0568
1 Answer
Explanation:
Let us call
Since there are 4 Aces in a deck of cards, the probability of drawing an Ace is
In a probability question such as this, the keyword "or" in the phrase "an ace or a heart" is synonymous with the union or addition of the probabilities of each of the mentioned events.
However, keep in mind that to properly calculate such a union of probabilities, you must account for the intersection of the events since you may be overcounting by simply adding the probabilities together. There's a handy formula that helps with this:
We know
Thus: