Calculating Blackjack ProbabilitiesProbability Blackjack QuestionsBlackjack Statistics And ProbabilitiesBlackjack Probability TablesBeing dealt a 20 means 2 cards that are either an Ace and a 9 or two ten-value cards. The dealer’s 21 (blackjacks included) are: roughly 8% Your probability of being dealt 20 is approximately 9. In the classic Blackjack, players need to make their decisions by only ..