The standard number of cards in a deck of playing cards is 52. This traditional deck consists of four suits: hearts, diamonds, clubs, and spades, with each suit containing 13 ranks from Ace to King. In addition to these standard cards, many decks also include two Jokers, which are often used in certain games, bringing the total to 54 cards. The design and composition of playing cards can vary by culture and game type. Playing cards serve a variety of purposes, from casual entertainment to competitive games, and have a rich history that dates back centuries across various civilizations.