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sum mod

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AB Editor | 13:22 Wed 03rd Aug 2011 | Science
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Good afternoon,

Can anyone explain what a "sum mod" is to a thick person like myself please? How does it work?
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Not quite sure what you are asking as you have not put it in context.

Would that be 'sum' as in the sums you used to do at school?
Is that 'mod' as in modulo?

Modulo is the remainder after doing an integer division.
examples:
10 mod 3 = 1 (10/3 = 3 remainder 1)
30 mod 7 = 2 (30/7 = 4 remainder 2)
25 mod 5 = 0 (25/5 = 5 remainder 0)

The associated operator DIV is the integer result of an integer division (ignoring the remainder)

10 div 3 = 3 (10/3 = 3 remainder 1)
30 div 7 = 4 (30/7 = 4 remainder 2)
25 div 5 = 5 (25/5 = 5 remainder 0)
You know me Ed, always willing to help but as gen says can you explain what you mean in more detail.
sum of us are moderators and sum are not!
You employ some mods don't you Ed?
Is a 'sum mod' one that you can count on?
'Sum Mod' is the 60's equivalent of today's 'Cool Dude'.
Is it something to do with Gaming?
http://negativesum.ne...f-sum-mod-release-v3/
I think the AB Ed has forgotten about this thread - must have too much work to do.
ehhhhhh ?
Maybe Ed is using IE6 and is therefore unable to respond to his own question
The Ed does appear to be in a different garden to the rest of us.

His recent newsletter ( perhaps that really should read Newslater) has directed our attention to Videos on YouTube where, advising how to reply to postings, he has said:-

"As this is my question I am going to thank all the contributors. Leaving an answer on your own question is the best way to say thanks to other users"

Sorry Ed if I am being a pain in your arse. :-)

Ron.
Question Author
Afternoon all,

Gen2, that helped me a great deal. I was just unsure how the thing actually looks!

Thanks everyone else for your contributions.

All the best.

Ed.
You are welcome AB Ed. For a moment there I thought you had abandoned this thread ;-)
Hi Ed,

Could you be referring to the method used by banks for the allocation of account numbers, where the last number is a 'check digit', which should eliminate people transposing numbers when inputting their account details anywhere:

http://en.wikipedia.org/wiki/Luhn_algorithm

Not all use 'modulus 10', I've known 11, 13 & 17. HMRC used to use 35, if I remember correctly, for companies VAT registration numbers.

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