Shopping Cart
You're getting the VIP treatment!
With the purchase of Kobo VIP Membership, you're getting 10% off and 2x Kobo Super Points on eligible items.
itemsitem
With the purchase of Kobo VIP Membership, you're getting 10% off and 2x Kobo Super Points on eligible items.
Save $2.52 (15% off) and earn Kobo Super Points!
You'll see how many points you'll earn before checking out. We'll award them after completing your purchase.
Or, get it for 7600 Kobo Super Points!
See if you have enough points for this eBook. Sign in
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.
You can read this item using any of the following Kobo apps and devices: