Answer:
There are 52 cards in a deck, and 13 of them are hearts. Therefore, the probability of drawing a heart is 13/52, or approximately 0.25.
There are also four sevens in a deck (one of each suit), so the probability of drawing a seven is 4/52, or approximately 0.08.
To find the probability of drawing either a heart or a seven, we need to add the probabilities of these two events together. Therefore, the probability of drawing a heart or a seven is 0.25 + 0.08, or approximately 0.33. This can also be written as a fraction as 13/52 + 4/52, which simplifies to 17/52.
Overall, the probability of drawing a heart or a seven from a standard deck of cards is approximately 0.33, or 17/52.