The Purplemath Forums

Helping students gain understanding and self-confidence in algebra.

Skip to content

number theory: division rule for 7 in base 8?  TOPIC_SOLVED

Sequences, counting (including probability), logic and truth tables, algorithms, number theory, set theory, etc.
Post a reply

number theory: division rule for 7 in base 8?

Postby Mike MacClure on Thu Aug 30, 2012 2:09 am

There is a theorem in base 10 that if the sum of the digits in a number equals either nine or a number that is divisible by nine, then the original is also divisible by nine.
My question is will this be true for 7 in base 8 as well?
Mike MacClure
Mike MacClure
 
Posts: 1
Joined: Thu Aug 30, 2012 1:52 am
Top

Sponsor

Sponsor
 
Top

Re: number theory: division rule for 7 in base 8?  TOPIC_SOLVED

Postby maggiemagnet on Thu Aug 30, 2012 12:13 pm

I think so. Try here and here for more info.
:clap:
User avatar
maggiemagnet
 
Posts: 250
Joined: Mon Dec 08, 2008 12:32 am
Top
Post a reply

Return to Discrete Math

Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group. Color scheme by ColorizeIt!