dave@perle.UUCP (Dave LeReverend) (12/22/88)
Mark Bartelt has pointed out an ambiguity in my posting of December 20. I now quote myself: > As an example, I used a 9-digit SIN with the following form: > 123 456 78C > where "C" is the check sum digit. > Steps: > 1) Use the even digits to form a four-digit number. > In this example, it's: 2468 > 4) Use the odd digits (but not "C") to form another four-digit number. > 1357 When I said, in step 1, "even digits", I meant "digits that occupy an even position". I did not mean "digits which have even values". A similar clarification should be applied to step 4. I'm sorry if this caused any confusion. There is also ambiguity with regards to summing the digits; if a carry occurs, is the carry summed, too? I suspect it is, but I don't know any real SINs that result in this case, so I haven't tested it. David LeReverend
root@helios.toronto.edu (Operator) (12/23/88)
In article <422@perle.UUCP> dave@perle.UUCP (Dave LeReverend) writes: >Mark Bartelt has pointed out an ambiguity in my posting of December 20. > >When I said, in step 1, "even digits", I meant "digits that occupy an even >position". I did not mean "digits which have even values". > >A similar clarification should be applied to step 4. > That clears it up nicely. I tried it again with the clarified algorithm, and this time it worked fine. Apologies for jumping the gun. Evidently the holder's gender plays no part in the number. -- Ruth Milner UUCP - {uunet,pyramid}!utai!helios.physics!sysruth Systems Manager BITNET - sysruth@utorphys U. of Toronto INTERNET - sysruth@helios.physics.utoronto.ca Physics/Astronomy/CITA Computing Consortium