If a single card is randomly selected from a deck of cards, what is the probability of selecting an ace or a king?

In this problem, we're asked that when selecting a single card from a deck of cards, what is the probability of selecting an ace or a king? Now, these are 2 mutually exclusive events because they cannot happen at the same time. If I draw a single card, it cannot be both an ace and a king. So that tells me that I can just add these 2 separate probabilities together to get the probability of either or happening. So if I refer to selecting an ace as event a and selecting a king as event b, the probability of a or b happening is simply equal to the probability of a plus the probability of b. Now looking at the probability of selecting an ace, I know that there are 4 aces in a deck of 52 cards. So that tells me here that the probability of selecting an ace is 4 over 52. Then looking at the probability of selecting a king, well, there are also 4 kings in a deck of 52. So here my probability is also 4 over 52. Now adding these two probabilities together I get 8 over 52 since these already have the same 52 cards is 0.15. Thanks for watching, and I'll see you in 52 cards is 0.15. Thanks for watching, and I'll see you in the next one.