Author(s): David B. Johnson, Thomas A. MowryDifference between 8th and 7th editions Side by side comparison of table of contents helps to figure out the most significant changes. |

**Key differences between 8th and 7th editions**

- Period between current and previous publications: 4 years (2015 vs 2011).
- Johnson and Mowry's
*Mathematics*book was first published in 1994. - The new Eighth Edition consists of 13 chapters as well as the previous one and contains the same number of pages.
- New section "1.6 Deductive Proof of Validity" covers formal proofs of validity, rules of replacement.
- In Chapter 3 the section on probabilities in genetics covers hemophilia, an inherited blood clotting disorder.
- Chapter 5 takes up topics of interest for all college students, such as loans and maxed-out credit cards.
- Chapter 7 has interesting material on why sexagesimal (base 60) system is used to measure angles and time.
- Chapter 11 on Markov Chains has been re-titled and reorganized, and includes two new sections "11.1 Markov Chains and Tree Diagrams" and "11.2 Markov Chains and Matrices".

Mathematics: A Practical Odyssey

Published by: Cengage Learning, January 01, 2015

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Available |

Published by: Cengage Learning, January 01, 2015

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$79.98 |
From: $64.61 |

Mathematics: A Practical Odyssey

Published by: Wadsworth Publishing, February 01, 2013

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Available |

Published by: Cengage Learning, January 01, 2011

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$68.00 |
From: $4.99 |

Mathematics: A Practical Odyssey

Published by: Brooks Cole, September 22, 2006

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$83.36 |
From: $4.00 |

with CengageNOW, Personal Tutor, and Printed Access Card

**Hardcover**, 912 pages

Published by: Cengage Learning, September 22, 2006

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---|---|---|---|

$100.00 |
From: $5.00 |

**Saving advice**

- Used 8th edition can save you
**$15.37**over the new one. -
Used previous 7th edition costs
**$59.62**less than the used 8th.