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December 1999, Week 1

HP3000-L@RAVEN.UTC.EDU
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Subject:
Re: Just A Test
From:
Tony Summers <[log in to unmask]>
Reply To:
Tony Summers <[log in to unmask]>
Date:
Fri, 3 Dec 1999 13:47:48 +0000
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Can anyone explain why the works?  I know that any number multiplied by 9
gives a number whose digits add up to 9, but why?  Is this an inevitable
outcome of our base 10 number system?  Would a base 8 number system would
the same for the number 7?

Go visit  http://forum.swarthmore.edu/k12/mathtips/ward2.html

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