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Message-ID: <4EE4E7C3.2090...@softcatala.org>
Date: Sun, 11 Dec 2011 18:26:27 +0100
From: Jordi Mas <j...@softcatala.org>
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Subject: Re: [gbrainy] Typo
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En/na Michael ha escrit:
> The question reads:
> "A file is protected by a password formed by a 2 digits represented in
> base 8 (ranging from 0 to 7).  How many different numbers can you
> have?"
> 
> A better phrasing would be:
> 
> "A file is protected by a password formed by two numbers represented
> in base 8 (ranging from 0 to 7).  How many different passwords can you
> have?"
> 
> In some sense, most egregious is the use of the word "digit" which
> implies the number is in base 10 (since we have ten digits on our
> hands).  Then "How many different numbers" makes it sounds that the
> two numbers in the password are to be read together as a single
> number, which would then make 56 a plausible answer, since we rarely
> write numbers with leading zeros.

Thanks for your feedback Michael

The issue that I see using numbers instead of digits is that 4 and 45 
are numbers. When we say 'by two numbers represented in base 8' this can 
be '4' and '5' or '456' and '566', since all are numbers.

The reason for using digits is because refers precisely to the numbers 
of digits presented in the number.

See also: http://en.wikipedia.org/wiki/Numerical_digit. It says

Let me know if you see still space for improvement.

Thanks,

Jordi,

-- 
Jordi Mas i Hern�ndez -Bloc: http://gent.softcatala.org/jmas/bloc/
Planet Softcatal� -> http://planeta.softcatala.org
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