# Nice Numbers

• John Barnes
Book

1. Front Matter
Pages i-xiii
2. John Barnes
Pages 1-23
3. John Barnes
Pages 25-42
4. John Barnes
Pages 43-67
5. John Barnes
Pages 69-96
6. John Barnes
Pages 97-114
7. John Barnes
Pages 115-135
8. John Barnes
Pages 137-160
9. John Barnes
Pages 161-177
10. John Barnes
Pages 179-204
11. John Barnes
Pages 205-225
12. John Barnes
Pages 227-230
13. John Barnes
Pages 231-237
14. John Barnes
Pages 239-244
15. John Barnes
Pages 245-248
16. John Barnes
Pages 249-263
17. John Barnes
Pages 265-285
18. John Barnes
Pages 287-293
19. John Barnes
Pages 295-302
20. John Barnes
Pages 303-323
21. Back Matter
Pages 325-329

### Introduction

In this intriguing book, John Barnes takes us on a journey through aspects of numbers much as he took us on a geometrical journey in Gems of Geometry. Similarly originating from a series of lectures for adult students at Reading and Oxford University, this book touches a variety of amusing and fascinating topics regarding numbers and their uses both ancient and modern. The author intrigues and challenges his audience with both fundamental number topics such as prime numbers and cryptography, and themes of daily needs and pleasures such as counting one's assets, keeping track of time, and enjoying music. Puzzles and exercises at the end of each lecture offer additional inspiration, and numerous illustrations accompany the reader. Furthermore, a number of appendices provides in-depth insights into diverse topics such as Pascal’s triangle, the Rubik cube, Mersenne’s curious keyboards, and many others. A theme running through is the thought of what is our favourite number.

Written in an engaging and witty style and requiring only basic school mathematical knowledge, this book will appeal to both young and mature readers fascinated by the curiosities of numbers.

### Keywords

numbers primes cryptography bellringing music calendar probability rubik cube babylonian

#### Authors and affiliations

• John Barnes
• 1
1. 1.John Barnes Informatics CavershamUnited Kingdom