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

Published by: Cengage Learning, January 01, 2015

Mathematics: A Practical Odyssey

Published by: Wadsworth Publishing, February 01, 2013

Published by: Cengage Learning, January 01, 2011

Mathematics: A Practical Odyssey

Published by: Brooks Cole, September 22, 2006

with CengageNOW, Personal Tutor, and Printed Access Card

**Hardcover**, 912 pages

Published by: Cengage Learning, September 22, 2006