What is the probability of picking a king at random from a standard deck of cards?

A standard deck of cards contains 52 cards, including 4 kings (one from each suit: hearts, diamonds, clubs, and spades). The probability of picking a king at random is the number of favorable outcomes (4 kings) divided by the total number of outcomes (52 cards). Therefore, the probability is 4/52, which simplifies to 1/13.