How many decks used in blackjack game in las Vegas?

In Las Vegas, blackjack games typically use between one and eight decks of cards. Single-deck games are less common, while most casinos prefer to use multiple decks, often six or eight, to increase the house edge and complicate card counting. The specific number of decks can vary based on the casino and the type of blackjack game being played. Always check the rules at the specific table for the exact setup.