用加减乘除,不加括号,1,2,3,4,5,6怎样算等于75?
4个回答

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