Question

数学题，高悬赏~·在线等

两个1两个9加减乘除随便用，最后等于10

Answer 1

一共有32组解：

(1+1/9)*9=10
(1+(1/9))*9=10
(1+1/9)*9=10
(1+(1/9))*9=10
(1/9+1)*9=10
((1/9)+1)*9=10
(1/9+1)*9=10
((1/9)+1)*9=10
(1+1/9)*9=10
(1+(1/9))*9=10
(1+1/9)*9=10
(1+(1/9))*9=10
(1/9+1)*9=10
((1/9)+1)*9=10
(1/9+1)*9=10
((1/9)+1)*9=10
9*(1+1/9)=10
9*(1+(1/9))=10
9*(1/9+1)=10
9*((1/9)+1)=10
9*(1+1/9)=10
9*(1+(1/9))=10
9*(1/9+1)=10
9*((1/9)+1)=10
9*(1+1/9)=10
9*(1+(1/9))=10
9*(1/9+1)=10
9*((1/9)+1)=10
9*(1+1/9)=10
9*(1+(1/9))=10
9*(1/9+1)=10
9*((1/9)+1)=10

Answer 2

(1+1/9)*9=10/9*9=10

Answer 3

（1+1/9）*9=10
^_^