View Single Post
Posts: 673 | Thanked: 856 times | Joined on Mar 2006
#2294
Originally Posted by titou1234 View Post
OK for the date, but where do you find that you have to transform it in base 9 ?
N9= Number + 9

Base 9 is called nonary as well.

I am astonished by the fact that someone managed to solve it within 10 minutes.

1. Base 9 is totaly unexpected, are there some additional clues about it?
2. It takes time to convert the number to base 9 (no readily available) calculators.

Last edited by momcilo; 2011-07-22 at 08:47.