One to Nine: The Inner Life of NumbersAndrew Hodges, author of the acclaimed biography Alan Turing: the Enigma, brings numbers to threedimensional life in this delightful and illuminating volume. Filled with illustrations and entertaining puzzles, One to Nine makes even the most challenging math problems accessible to the layperson. Starting with the puzzling unity of one and ending with the infinite nature of nine, One to Nine explores literature, philosophy, and the quirks of history in a pithy book that tackles mathematical conundrums from the ancient Greeks to superstring theory. Using pop culture to begin his discussion of each number, Hodges takes us from the elegant symmetry of two to the IndoEuropean roots and sexual nature of six (did you know that six is sex, and in soixanteneuf, even the number is erotic?), To the number nine, which, since it comes last, inevitably spells doom (as in Mahler's and Bruckner's failure to finish their ninth symphonies or to the question of on ending infinites). Inspired by millennia of human attempts to figure things out, One to Nine provides, among other tantalizing facts, charming revelations about the selfishness of sunflowers and the mystic origins of magical squares, while also examining the intricacies of the Fibonacci sequence, the nature of Jesus' Y chromosome, and the origins of computing. Filled with puzzles for every level of mathematical aptitude, rated from easy to fiendish, and including a new, massive Sudoku puzzle, One to Nine is a book that engages and challenges, "making the unfathomable enticing and giving the reader tremendous motivation to explore further" (Daily Telegraph). In the vast range of Hodges's book, few mathematical ideas and problems are left unexplored.  Jacket flap. 
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Review: One to Nine: The Inner Life of Numbers
User Review  Kelley Jones  GoodreadsHad trouble getting into and finishing this book. Some of what he had to say was interesting, but the writing style was disjointed and distracted from the material. He also spent a disproportionate amount of time referencing other books of the same subject. Too bad, a nice concept. Read full review
Review: One to Nine: The Inner Life of Numbers
User Review  Dave Guia  GoodreadsI like mathematics, but not enough to be swooped up into the laborious formulas and theories that the author puts us through. Way too advanced for a guy like me. On a scale of one to nine...I'd give it a 22/7... Read full review
Contents
The Unloved One  1 
To Be or Not to Be  37 
Trinidad  71 
Its a Square World  101 
Fifth Freedom  147 
The Joy of Six  175 
The Wonder of it All  215 
Sound Bytes  239 
End Times Table  283 
Handson Experience  321 
327  
Common terms and phrases
Alan Turing binary broken symmetry calculator called century Chapter colour force completely complex numbers Constance Reid counting cube cycle decimal defined diagonal digit dimensions duality Einstein electrons enciphering equations equivalent exactly example exponential fact factor factorisation Fermat Fibonacci numbers formula four fundamental G. H. Hardy Gauss geometry gives guess Hardy human idea infinite integers Killer Sudoku large numbers light logarithm logic look magic mathematicians mathematics means measure Mersenne primes million modulo multiplication natural noughth nuclear pairs particles pattern Penrose Penrose tilings physical picture possible prime numbers probability problem properties protons puzzle quantum mechanics quarks quaternions question Quintic equations random ratio recipe rotation scale sequence shows solve space spacetime sphere square root string theory Sudoku symbols theory thing threedimensional tion triangle Turing Turing's turn twistor twistor space universal machine weak force write zero