To find the probability of not being dealt a heart from a standard deck of 52 playing cards, we first need to understand how many hearts are in the deck. A standard deck contains 13 hearts, which means there are 39 cards that are not hearts.
The probability of an event happening is calculated by dividing the number of favorable outcomes by the total number of possible outcomes. In this case, the favorable outcomes are the 39 non-heart cards, and the total outcomes are the 52 cards in the deck.
Thus, the probability of not being dealt a heart is:
Probability = Number of non-heart cards / Total number of cards
Probability = 39 / 52
This simplifies to:
Probability = 3 / 4
Therefore, the probability that you are not dealt a heart is 75% or 0.75.