How did the poker count 24 come from?

"Math 24 Game" is popular all over the world and has become the entertainment for a group of friends to get together. Because it's easy to play, even if only one person entertains himself. When there is traffic jam, just looking at the license plate can also be used as a way to relieve boredom. And this universality certainly has a certain promoting effect on mathematics.

It is said that "Math 24 Game" was invented by Mr. Sun Shijie from China. He began to conceive it in 1986, and 1988 officially appeared in the United States, and quickly swept the United States. However, as early as 1979, 1 finalized by Mr. Mao Zhijia and Mr. Xu Fangqu and "See Who Calculates Fast" published by Children's Publishing House also talked about this 24-style game. Its basic principle and thinking are the same as those invented by Mr. Sun Shijie, and besides the four operations, it can also use power, square or even square.

At present, "Math 24 Game" is very simple to play. You can randomly select four numbers (which can be repeated) from the integer between 1 and 10, and then use the four operations of addition, subtraction, multiplication and division to calculate the specified answer "24", so that the same group of numbers can have different calculation methods (formulas). Generally speaking, you can use playing cards or UNO cards as a tool to select numbers, and of course you can also make your own digital cards, which will be more distinctive.

There are many ways to compete in Math 24 Game, such as calculating the speed of the game, comparing who has many ways, filling in numbers or symbols in the form of fill-in-the-blank questions, and creating your own competition form to increase the difficulty and interest.