怎么样使1( )2( )3( )4( )5( )6( )=75成立

来源:百度知道 编辑:UC知道 时间:2024/05/17 05:25:31
快啊~~~`

共有21个算式:
1*23-4+56=75
1*(23-4)+56=75
1*(23-4+56)=75
1*23-(4-56)=75
1*(23-(4-56))=75
1+23+45+6=75
12+3+4+56=75
12*3+45-6=75
(12+3)*(4-5+6)=75
(12+3)*(4-(5-6))=75
(12-3)*(4+5)-6=75
12*(3/4+5)+6=75
1+2+(3+4+5)*6=75
1+2*(3+4+5*6)=75
(1+2)*(3+4*5)+6=75
(1+2)*3*(4+5)-6=75
(1+2*(3/4+5))*6=75
(1+2*3/4)*5*6=75
(1*2+3)*(4+5+6)=75
1*(2+3)*(4+5+6)=75
(1/2+3+4+5)*6=75

不使用括号的共有4个:
1*23-4+56=75
1+23+45+6=75
12+3+4+56=75
12*3+45-6=75

1*23-4+56=75
1*(23-4)+56=75
1*(23-4+56)=75
1*23-(4-56)=75
1*(23-(4-56))=75
1+23+45+6=75
12+3+4+56=75
12*3+45-6=75
(12+3)*(4-5+6)=75
(12+3)*(4-(5-6))=75
(12-3)*(4+5)-6=75
12*(3/4+5)+6=75
1+2+(3+4+5)*6=75
1+2*(3+4+5*6)=75
(1+2)*(3+4*5)+6=75
(1+2)*3*(4+5)-6=75
(1+2*(3/4+5))*6=75
(1+2*3/4)*5*6=75
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