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Answers and rating deltas for

Does a 2-char check digit for a barcode use the first or second char?

Author Votes Δ
Magoo 1 +0.40
Mike Zboray 1 -0.07
B. Clay Shannon-B. Crow Raven 0 -2.61
Last visited: Sep 14, 2014, 5:07:29 AM