The 24 Game: You can only use the operations of addition, subtraction, multiplication, and division, and each number can be used only once. The final result of the operations should be 24
24点游戏：只能使用加减乘除中的运算，每个数字只能使用一次。最后的运算结果为24.
Try the following combinations of numbers:
尝试以下这几个数字的组合：
* 11 11 2 2 * 5 5 5 1 * 2 4 7 12 * 3 3 8 8 * 3 3 7 7 * 1 3 4 6