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Jerry Avins Jerry Avins is offline
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Default I was told not to purchase fish from China

On Monday, March 5, 2012 10:42:57 AM UTC-5, Betsy D wrote:

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> > 9th digit: Check digit (whatever _that_ means)


It means that all the other digits (or maybe only the preceding digits) are plugged into a formula, and the result is the 9th digit. That way, if you make up a "VIN" at random, nine times out of ten it will be an obvious fake to those who know the formula. There are check digits in credit-card numbers, too.

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Jerry
--
"I view the progress of science as being the slow erosion of the
tendency to dichotomize." Barbara Smuts, U. Mich.