What is the probability that a card selected at random from a standard deck of 52 cards is an ace or a heart? (enter the value of probability in decimal format and round it to two decimal

Sample space={all 52 cards} = all possible outcome

P(Ace) =4/52 = 0.0769
P(Heart) = 13/52 = 0.25

Just one card is drawn, so :
P(Ace ∪ Heart) = P(Ace) + P(Heart) - P(Ace ∩ Heart).
But with ONE card drawn P(Ace ∩ Heart) = 0 (Mutually exclusive/disjoint)
:
Hence P(Ace ∪ Heart) = 0.0769+0.25 = 0.3269 ≈ 0.33

Google it that might work