The odds of drawing a particular card in blackjack after the first two cards have been dealt depend on the number of remaining cards in the deck and which cards have already been revealed. In a single-deck game, there are 52 cards, so after the first two cards are dealt, 50 cards remain. The probability of drawing a specific card, such as a 10, is determined by how many of that card are still in the deck. For example, in a single-deck game, there are 16 ten-value cards, and after two cards are dealt, the odds of drawing a 10 are adjusted based on the remaining 14 ten-value cards. If multiple decks are used, the same principle applies, but the calculations are adjusted to account for the larger number of cards. The odds change as the composition of the deck shifts with each card dealt.