呼和浩特生日宴酒店:1111111……(20个1)怎样用加减乘除才能使得数是520
来源:百度文库 编辑:高校问答 时间:2024/06/01 17:03:11
[(1+1)×(1+1)×(1+1)×(1+1)×(1+1)×(1+1)+1]×(1+1)×(1+1)×(1+1)×1=520
[(1+1+1)*(1+1+1)+1]*(1+1)*(1+1)*[(1+1)*(1+1)*(1+1+1)*1+1]=520
[(1+1)×(1+1)×(1+1)×(1+1)×(1+1)×(1+1)+1]×(1+1)×(1+1)×(1+1)×1=520
[(1+1+1)*(1+1+1)+1]*(1+1)*(1+1)*[(1+1)*(1+1)*(1+1+1)*1+1]=520