The Largest Integer!

For students of class 9-10 (age 14-16)
User avatar
Kazi_Zareer
Posts:86
Joined:Thu Aug 20, 2015 7:11 pm
Location:Malibagh,Dhaka-1217
The Largest Integer!

Unread post by Kazi_Zareer » Fri Dec 09, 2016 9:30 am

We say a non-negative integer $n$ "contains" another non-negative integer $m$, if the digits of its decimal expansion appear consecutively in the decimal expansion of $n$. For example, $2016$ contains $2$, $0$, $1$, $6$, $20$, $16$, $201$, and $2016$. Find the largest integer $n$ that does not contain a multiple of $7$.
We cannot solve our problems with the same thinking we used when we create them.

Post Reply