Or 6 ÷ (5 ÷ 4- 1)=24

24 points is a mathematical game, and four numbers get 24 through four operations and brackets.

Game skills:

1. Use 3×8=24, 4×6=24, 2× 12=24 to solve.

Try to make the four numbers on the card face 3 and 8, 4 and 6, 2 and 12, and then multiply them to solve. Practice has proved that this method has the highest utilization rate and hit rate.

2. Use the operational characteristics of 0 and 1 to solve it.

For example, 3, 4, 4 and 8 can form 3×8×(4÷4)=24.

For example, 4,7, 1, 1 can form 4×1(7-1)×1= 24.

3. See if there are 2, 3, 4, 6, 8 and Q in the four cards.

If there is, you can consider using multiplication to make the remaining three numbers into corresponding numbers. If there are two identical 6, 8, Q, for example, there are two 6, the rest can be calculated as long as it can be added to 3, 4, 5, and there are two 8, the rest can be calculated as long as it can be added to 2, 3, 4, and the rest can be calculated as long as it can be added to 1, 2, 3, for example, (9, j, if there is no 2,

4. Add and subtract 4 cards to get 24.

5. multiply first, then add and subtract a certain number.

6. The score appears in the calculation process. There is a rule that four numbers are A, B, C and D, and ab+c=24 is required.

Or ab-c=24 d=a or b, if d=a, there is a(b+c/a)=24 or a(b-c/a)=24.

Only 17 can use this method.

7. A very large number (above 30) will appear in the calculation process. Relatively difficult, but sometimes there is only this solution. For example, (6,9,9, 10) is 9× 10÷6+9.

It should be noted that a deck of cards (54 cards, excluding two trump cards) has 1820 different combinations, of which 458 cards can't be counted as 24 points, such as 1, 1, and 5.