When the digit is placed at the beginning and end of a positive integer N, the new number is 99*N.

Find the smallest value of N.

(In reply to We're going to need more precision (spoiler) by Steve Herman)

...".multiply it by the smallest digit necessary ..."

which is clearly 1

" make it a length 22 number" = you mean length 21.

Edited on July 11, 2015, 11:23 am

Posted by Ady TZIDON on 2015-07-11 11:19:02