Question

有a b c d四个数，只通过加、减、乘、除四种运算最多能得到多少个结果啊？（可以使用括号）

这四个数可以交换位置如1，2，3，4，可以1+2*3+4也可以1+4*3+2也可以1*（4+3*2）。但是1+2+3+4与1+3+2+4却只能算一种。我算着好像有1000多吧。您算时一定要注意“最多”这两个字。您可以用2、10、50、1000来算（建议）。谢谢了！

Answer 1

可以用括号的话可能性太多了

Answer 2

应该是1142。。。

Answer 3

无数吧...

Answer 4

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