The answer to this question is not as simple as one might think. In fact, it has a lot to do with history and mathematics.
First, the answer has to do with the fact that 21 is an easily remembered number. It’s also the result of adding 1 to each digit in the number 10, which is why it’s also known as “the ten spot.”
Second, 21 has been used as a basic rule for playing blackjack for centuries. It’s simple and easy to remember, and it helps to ensure that the overall odds of winning are in your favor.
Finally, 21 has been associated with blackjack for a reason. The number 21 is statistically more likely than any other number to be dealt in a blackjack game.
