The Penguin Dictionary of Curious and Interesting Numbers

Penguin Adult, 4 sep. 1997 - 231 sidor
Why was the number of Hardy's taxi significant? Why does Graham's number need its own notation? How many grains of sand would fill the universe? What is the connection between the Golden Ratio and sunflowers? Why is 999 more than a distress call? All these questions and a host more are answered in this fascinating book, which has now been newly revised, with nearly 200 extra entries and some 250 additions to the original entries. From minus one and its square root, via cyclic, weird, amicable, perfect, untouchable and lucky numbers, aliquot sequences, the Cattle problem, Pascal's triangle and the Syracuse algorithm, music, magic and maps, pancakes, polyhedra and palindromes, to numbers so large that they boggle the imagination, all you ever wanted to know about numbers is here. There is even a comprehensive index for those annoying occasions when you remember the name but can't recall the number.

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Om författaren (1997)

David Wells was born in 1940. He had the rare distinction of being a Cambridge scholar in mathematics and failing his degree. He subsequently trained as a teacher and after working on computers and teaching machines taught mathematics and science in primary schools and mathematics in secondary schools. While at university he became the British under-21 chess champion, and in the mid 1970s was a game inventor, a puzzle composer, and the puzzle editor of Games and Puzzles magazine. From 1981 to 1983 he published The Problem Solver, a magazine of mathematical problems for students. He has published several books of problems and popular mathematics including The Penguin Dictionary of Curious and Interesting Geometry, The Penguin Book of Curious and Interesting Puzzles, The Penguin Book of Curious and Interesting Mathematics, and, also for Penguin, You Are a Mathematician.

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