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This book is only about numbers. Every number is unique and has its own speciality. Each number has some unique properties. The numbers starting with zero up to nine are discussed in each chapter. When used as a counting number, zero means that no objects are present. It is the only integer (and in fact the only real number) that is neither negative nor positive. Among the whole numbers or integers, zero is unique. Numbers are fascinatingly complex in their relationships. There is beauty and magic in each number. The numbers also have a gender and can be male or female. Numbers have been classified in to odd and even. A number can be prime or composite. Number two is called the "oddest prime" because it is the only even prime number. Two and three have been called the "Siamese twins" among the primes, since they are the only two which are not separated by a composite number. You will read about Prime numbers, Perfect numbers, Lucky numbers, Happy numbers, Fermat numbers and a lot more numbers in this book. Nine is the last single digit number and it is peculiar in many respects. Figurate numbers starting with square and triangular numbers proceed up to nonagonal numbers. Magic squares composed of figurate numbers have been included. Numbers play an important part in any language especially so in English. Idioms and phrases using the numbers zero to nine along with their meanings have been discussed in Appendix A. Indian mythology and Sanskrit language contain several references to numbers and these are highlighted. Number recreations eventually come to Number Amusements. Students and others with an interest in mathematics for entertainment will enjoy reading this book. At the end of the book, one chapter is devoted to arithmetical problems. Over 200 questions have been included which vary in their difficulty from very simple to moderate and complex. Any person with even a slight interest in mathematics also will find this book very useful.
The instant #1 New York Times bestseller. In time for the twentieth anniversary of 9/11, master storyteller Alan Gratz (Refugee) delivers a pulse-pounding and unforgettable take on history and hope, revenge and fear -- and the stunning links between the past and present. September 11, 2001, New York City: Brandon is visiting his dad at work, on the 107th floor of the World Trade Center. Out of nowhere, an airplane slams into the tower, creating a fiery nightmare of terror and confusion. And Brandon is in the middle of it all. Can he survive -- and escape? September 11, 2019, Afghanistan: Reshmina has grown up in the shadow of war, but she dreams of peace and progress. When a battle erupts in her village, Reshmina stumbles upon a wounded American soldier named Taz. Should she help Taz -- and put herself and her family in mortal danger? Two kids. One devastating day. Nothing will ever be the same.
Some things you can't take back. All Steve wanted was to find the balls to tell the girl of his dreams how he felt. And he finally had. Today was that day. A day engineered with no distractions. A day for just the two of them. No roommates. No cowardice. No second-guessing that the friendship they'd built over the last year wasn't more. Today was the day his hellish existence would move into the light. Snatched away by four simple words, Steve's day turns dark. From one second to the next, taking his future in his hands turns to a speeding train bearing down on him. Each day more torturous than the last, he’s forced to watch his love slumber through the whole experimental procedure. A procedure that has never worked. A procedure that turns her from his friend into subject 10-0-9. When she wakes, when she finally comes to, the first to survive, Steve wants to take it all back. The nightmare he'd been living was nothing compared to this.
WHAT VALUABLE COMPANY IS NOBODY BUILDING? The next Bill Gates will not build an operating system. The next Larry Page or Sergey Brin won’t make a search engine. If you are copying these guys, you aren’t learning from them. It’s easier to copy a model than to make something new: doing what we already know how to do takes the world from 1 to n, adding more of something familiar. Every new creation goes from 0 to 1. This book is about how to get there. ‘Peter Thiel has built multiple breakthrough companies, and Zero to One shows how.’ ELON MUSK, CEO of SpaceX and Tesla ‘This book delivers completely new and refreshing ideas on how to create value in the world.’ MARK ZUCKERBERG, CEO of Facebook ‘When a risk taker writes a book, read it. In the case of Peter Thiel, read it twice. Or, to be safe, three times. This is a classic.’ NASSIM NICHOLAS TALEB, author of The Black Swan
“A captivating story, not just an intellectual quest but a personal one . . . gripping [and] filled with the passion and wonder of numbers.” —The New York Times Virtually everything in our lives is digital, numerical, or quantified. But the story of how and where we got these numerals, which we so depend on, has for thousands of years been shrouded in mystery. Finding Zero is the saga of Amir Aczel’s lifelong obsession: to find the original sources of our numerals, perhaps the greatest abstraction the human mind has ever created. Aczel has doggedly crisscrossed the ancient world, scouring dusty, moldy texts, cross-examining so-called scholars who offered wildly differing sets of facts, and ultimately penetrating deep into a Cambodian jungle to find a definitive proof. Here, he takes the reader along for the ride. The history begins with Babylonian cuneiform numbers, followed by Greek and Roman letter numerals. Then Aczel asks: Where do the numbers we use today, the so-called Hindu-Arabic numerals, come from? It is this search that leads him to explore uncharted territory on a grand quest into India, Thailand, Laos, Vietnam, and ultimately into the wilds of Cambodia. There he is blown away to find the earliest zero—the keystone of our entire system of numbers—on a crumbling, vine-covered wall of a seventh-century temple adorned with eaten-away erotic sculptures. While on this odyssey, Aczel meets a host of fascinating characters: academics in search of truth, jungle trekkers looking for adventure, surprisingly honest politicians, shameless smugglers, and treacherous archaeological thieves—who finally reveal where our numbers come from. “A historical adventure that doubles as a surprisingly engaging math lesson . . . rip-roaring exploits and escapades.” —Publishers Weekly
"A startling new philosophy and practical guide to getting the most out of your money-and out of life-for those who value memorable experiences as much as their earnings"--
The bestselling workbook and grammar guide, revised and updated! Hailed as one of the best books around for teaching grammar, The Blue Book of Grammar and Punctuation includes easy-to-understand rules, abundant examples, dozens of reproducible quizzes, and pre- and post-tests to help teach grammar to middle and high schoolers, college students, ESL students, homeschoolers, and more. This concise, entertaining workbook makes learning English grammar and usage simple and fun. This updated 12th edition reflects the latest updates to English usage and grammar, and includes answers to all reproducible quizzes to facilitate self-assessment and learning. Clear and concise, with easy-to-follow explanations, offering "just the facts" on English grammar, punctuation, and usage Fully updated to reflect the latest rules, along with even more quizzes and pre- and post-tests to help teach grammar Ideal for students from seventh grade through adulthood in the US and abroad For anyone who wants to understand the major rules and subtle guidelines of English grammar and usage, The Blue Book of Grammar and Punctuation offers comprehensive, straightforward instruction.
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