A seven digit positive octal
is constituted by arranging the nonzero octal digits 1-7 in some order, so that:
- The octal number formed by the first two digits is divisible by 2.
- The octal number formed by the first three digits is divisible by 3.
- The octal number formed by the first four digits is divisible by 4.
- and, so on up to seven digits...
Determine all possible value(s) that X
(In reply to re: computer solution
I can understand your glee at find Charlie in error, but it seems that when he errs its something "minor" (if an error can be minor) within a carefully thoughtout process.
Our usual understanding here is to read numbers from left to right but it's good to see a different line of thinking, and for that matter, Charlie to accommodate it.
Posted by brianjn
on 2009-03-31 02:05:19