How many decks are used in blackjack?

The Pack 

The standard 52-card pack is used, but in most casinos several decks of cards are shuffled together. The six-deck game (312 cards) is the most popular.

Equally well known as Twenty-One. The rules are simple, the play is thrilling, and there is opportunity for high strategy. In fact, for the expert player who mathematically plays a perfect game and is able to count cards, the odds are sometimes in that player's favor to win.

But even for the casual participant who plays a reasonably good game, the casino odds are less, making Blackjack one of the most attractive casino games for the player. While the popularity of Blackjack dates from World War I, its roots go back to the 1760s in France, where it is called Vingt-et-Un (French for 21). Today, Blackjack is the one card game that can be found in every American casino. As a popular home game, it is played with slightly different rules. In the casino version, the house is the dealer (a "permanent bank"). In casino play, the dealer remains standing, and the players are seated. The dealer is in charge of running all aspects of the game, from shuffling and dealing the cards to handling all bets. In the home game, all of the players have the opportunity to be the dealer (a "changing bank").

The Pack

The standard 52-card pack is used, but in most casinos several decks of cards are shuffled together. The six-deck game (312 cards) is the most popular. In addition, the dealer uses a blank plastic card, which is never dealt, but is placed toward the bottom of the pack to indicate when it will be time for the cards to be reshuffled. When four or more decks are used, they are dealt from a shoe (a box that allows the dealer to remove cards one at a time, face down, without actually holding one or more packs).