This is the long term advantage that they have which will eventually take your money away. The most important odds percentage represents the dealer's edge in the game. We decided to make a few tables and charts of the most common blackjack probability odds for various scenarios and situations found while playing blackjack. Usually probability odds don't mean much on the short term, but they clearly average out in the long term and this is why the casinos always win over the long term. They can also represent the house edge or their profit margins as well. US Players and Credit Card, BitCoin Deposits Accepted! Blackjack Probability Oddsīlackjack odds are percentage figures which represent your probability of losing or winning a hand.