On 5/25/07, David Carlisle <davidc(_at_)nag(_dot_)co(_dot_)uk> wrote:
> 10 - ((sum($odd) * 3) + sum($even)) mod 10
yes, or
-sum((-10,$odd,$odd,$odd,$even)) mod 10
:) I think you've just turned off Simplification Street and gone down
Obfuscation Road....
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