Answer: 4/13
Explanation:
How many cards are there total? In a deck of cards without Jokers, you have 52 cards.
Now, what cards have a letter on them? These are the aces, kings, queens, and jacks. There are 16 of these cards in the deck total. Four different types, with four of each type (4 * 4 = 16).
We will put the number of desired outcomes (cards with a letter) over the possible outcomes (total cards) to create our probability.
16/52
4/13