Numbers are Forever

by Liz Strachan

About the Book: Numbers Are Forever Includes facts and curios, prime number conjectures, the sieve of Eratosthenes, the Fibonacci series, and much more besides. This title features an approach which can appeal to recreational maths enthusiasts, puzzle solvers, and mathematicians of all ages. This book is only about numbers - that is, whole numbers and nothing but the whole numbers, which start from 0, 1, 2, 3, 4 ...and go on forever. Here you can meet perfect numbers, happy numbers, lucky, untouchable, weird, narcissistic, evil and deficient numbers, not to mention nice Friedmans and multi-legged repunits, as well as primes and their cousins, the sexy primes. It is also full of fascinating facts and curios, prime number conjectures, the sieve of Eratosthenes, the Fibonacci series, and much more besides. This is an accessible, clearly explained approach which will appeal to recreational maths enthusiasts, puzzle solvers, and mathematicians of all ages. About the Author: Liz Strachan Liz Strachan was a maths teacher for 36 years. Her writing career started just before she retired when, on a whim, she entered and won first prize in the European Letter Writer of the Year Competition. Since then, she has published about 200 articles and short stories and, at the Scottish Association of Writers Annual Conference, she has won 6 first prizes and numerous other awards. She is married, and has two sons and four grandchildren.

Genres: Science

288 pages, Paperback

First published March 20, 2014

Reviews

[Sarah · Rating 3 out of 5]

Enjoyed the earlier part better but but I lost concentration in the middle and it got a bit repetitive in the end. Not good for bedtime reading as it gave me some odd dreams. I was a bit worried by 123 as it did not explain that zeros are even (!) and I'm still not sure what to do about leading zeros......

[Hyojin Kim · Rating 4 out of 5]

There were lots of different number tricks that I didn't know or learn. I read this book since one of the seniors recommended me which I think it was very interesting and helpful. Although I finished this book I'm still going to read it over and over again.

[Megan McLain · Rating 5 out of 5]

Really cool!!! Many new math tricks.

[Rosemary]

DNF at page 142. The first few chapters were a lot of fun, but then it got repetitive.