The probability of pulling a heart or a red card from a deck of cards is?

To find the probability of pulling a heart or a red card from a deck of cards, we first need to determine the number of desired outcomes and the total number of possible outcomes.

1. Count the number of hearts in a standard deck of 52 cards. There are 13 hearts in the deck (Ace, 2-10, Jack, Queen, and King).

2. Count the number of red cards in the deck. There are 26 red cards in total, consisting of 13 hearts and 13 diamonds.

3. Determine the total number of cards in the deck, which is 52.

Now, we can calculate the probability using the formula:

Probability = Number of Desired Outcomes / Total Number of Possible Outcomes

The number of desired outcomes is the sum of the hearts and the red cards, which is 13 + 26 = 39.

So, the probability of pulling a heart or a red card from a deck of cards is:

Probability = 39 / 52 = 3 / 4, or 0.75, which can also be expressed as 75%.