Abstract
We use identification numbers in many ways—account numbers, social security numbers, PINs. We look at how these numbers are made up, and how they are used. In particular, the formulas for drivers’ license numbers in Illinois and Florida are explained, as well as the check digits used in credit cards, postal money orders and book identification numbers (ISBNs) to make sure the numbers are legitimate and have been transmitted correctly.
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© 2013 Springer Science+Business Media New York
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Wallis, W.D. (2013). Identification Numbers. In: Mathematics in the Real World. Birkhäuser, New York, NY. https://doi.org/10.1007/978-1-4614-8529-2_9
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DOI: https://doi.org/10.1007/978-1-4614-8529-2_9
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Publisher Name: Birkhäuser, New York, NY
Print ISBN: 978-1-4614-8528-5
Online ISBN: 978-1-4614-8529-2
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