(7*7-1)÷2=24

(7*7-1)÷2=24望采纳!

(7X7-1)/2=24

(7*7-1)/2

(7x7-1)÷2=24 .

3*(7-2)+9=24给分!!

只用加减乘除只有一种算法:(7*7-1)÷2=24 不改变顺序只能用阶乘:(1+2+7÷7)!=4!=24

(7+7)*2-4 后面一个向不出来

共三种算法,举例如下:8*6-8*3=24(3+8÷8)*6=24

5*(5-1/5)=245*(5-(1/5))=245*(5-1/5)=245*(5-(1/5))=24(5-1/5)*5=24(5-(1/5))*5=24(5-1/5)*5=24(5-(1/5))*5=245*(5-1/5)=245*(5-(1/5))=245*(5-1/5)=245*(5-(1/5))=24(5-1/5)*5=24(5-(1/5))*5=24(5-1/5)*5=24(5-(1/5))*5=245*(5-1/5)=245*(5-(1/5))=245*(5-1/5)=245*(5-(1/5))=24(5-1/5)*5=24(5-(1/5))*5=24(5-1/5)*5=24(5-(1/5))*5=24