Answer:
7/13
Step-by-step explanation:
The question asks for the probability of drawing a black card or an ace. When it says or, we know that we need to add the two probabilities.
The probability of drawing a black card is 26/52, because half the cards are black.
The probability of drawing an ace is 4/52, because there are four aces.
But wait! We can't double-count. Two of those aces are black, so we need to subtract by 2/52.
26/52 + 4/52 = 30/52 - 2/52 = 28/52
28/52 = 7/13
