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Title: Who knew math could be such a roller-coaster ride?
Review: I took Dr. Tattersall's number theory class in the fall of 1998, for which we used a bound draft of this text. Its composition matches his frenetic and exhilarating lecture style, both in the presentation of the material and the frequent side-trips into math history. If you are math-mad, it's worth buying for fun, and if you must buy it for a class, it's worth hanging onto after that last exam. Good stuff!
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