1. There are 52 cards left in a deck. J, Q and K can be regarded as 1 1, 12, 13, or all of them can be regarded as 1. (So we regard J, Q and K as 1, and we can also use 40 cards of 1 ~ 10.). We can randomly select four cards (two players or four players), and use addition, subtraction, multiplication and division (brackets can be added) to calculate the number on the card face as 24. Each card can only be used once. Whoever solves it first will get the four cards. If there is no solution, he will take back his cards. Whoever wins all the cards wins. 2. As a poker intelligence game, Count 24 points should also pay attention to skills in calculation. When calculating, it is impossible to try different combinations of four numbers, let alone touch them together. At the beginning, it may take a long time to think about the solution. We can slow down and guide the application of some laws: for example, use 3 × 8 = 24 and 4 × 6 = 24 to solve problems, and try to change the four numbers on the card face into 3 and 8, 4 and 6, and then multiply them to solve them. Practice has proved that this method has the highest utilization rate and hit rate. When there are many different solutions to a set of cards, you can give time to think more.