999*333*333=? 巧算_数学解答

999*333*333=? 巧算

人气：405 ℃　时间：2020-04-02 14:20:59

解答

999*333*333
=999*999*999/3/3
=999*999*999/9
=(1000-1)*(1000-1)*(1000-1)/9
=997002999/9
=110778111