Pit your wits against the number crunchers at Mensa Publications who have devised this demonic collection of over 200 mind-boggling number puzzles. These are fun puzzles, but they are by no means easy. If you can solve them, you'll be a candidate for Mensa -- the internationally famous high-IQ society!

This entertaining book presents a collection of 180 famous mathematical puzzles and intriguing elementary problems that great mathematicians have posed, discussed, and/or solved. The selected problems do not require advanced mathematics, making this book accessible to a variety of readers. Mathematical recreations offer a rich playground for both amateur and professional mathematicians. Believing that creative stimuli and aesthetic considerations are closely related, great mathematicians from ancient times to the present have always taken an interest in puzzles and diversions. The goal of this book is to show that famous mathematicians have all communicated brilliant ideas, methodological approaches, and absolute genius in mathematical thoughts by using recreational mathematics as a framework. Concise biographies of many mathematicians mentioned in the text are also included. The majority of the mathematical problems presented in this book originated in number theory, graph theory, optimization, and probability. Others are based on combinatorial and chess problems, while still others are geometrical and arithmetical puzzles. This book is intended to be both entertaining as well as an introduction to various intriguing mathematical topics and ideas. Certainly, many stories and famous puzzles can be very useful to prepare classroom lectures, to inspire and amuse students, and to instill affection for mathematics.

When the reporters to a sex-trafficking exposé are murdered and computer hacker Lisbeth Salander is targeted as the killer, Mikael Blomkvist, the publisher of the exposé, investigates to clear Lisbeth's name.

Simple Cross Number is constructed on a crossword grid just like a standard crossword, but the digits 1 to 9 are used instead of the letters of the alphabet. In a Cross Number Puzzle, the Across and Down clues are sums, subtraction, multiplication, or division of the digits in the across and down words. The rules are simple: 1.The empty cells should contain numbers from 1 through 9 2.The clues in the rightmost cell and the lowest cell tells the sums, subtraction, multiplication, or division of the numbers before that clue. (on the right or down) 3.The numbers in empty cells must be unique. No number should be used more than once. 4. Use regular math order of operations ( x ÷ precedes + - ) Book features: This book contains 180 Cross Number Puzzles Large-print Book. very easy to read, and fill out. Large and Easy To Read Font 2 puzzles per page, solving could be easy on your eyes An answer key for each puzzle Puzzles are printed on high-quality white paper, size 8,5 x 11 inches By using this selection of sudoku puzzle books you would experience enhanced brain capabilities for example focus, logical thinking, and memory. Perfect puzzle book collections as a special gift for your loved ones Choose your book today by clicking on the BUY NOW button at the top of this page. Get Your Book NOW!

180 Pages of Math for Creative People. Yes, we add, subtract, multiply and use algebra, but it's not like school! It's not even like the math you know. It's all about inventing, being creative, and bossing around the little people who run all your machines. You will manage a business, pay your little workers, enter competitions, write advertisements, become a journalist, sell inventions, and create new games. Practice using ALL the math you will actually need in REAL life! This is the ultimate mathematical workout for creative thinkers. This book was created as an alternative to boring and repetitious math workbooks we all hate. Use this for Homeschooling ages 13 to 17, or for any one who wants to play with numbers! There is nothing In this book that is not FUN. For Age 13 and Up - Homeschool High School and Middle School Good for Students with Dyslexia, ADHD and Autism. The Thinking Tree Publishing

Get better at maths and numbers by realizing which math skills you already use in daily life, and learn new ones while having fun. Did you realize how much maths you are already using when playing computer games, planning a journey, or baking a cake? This ebook shows how to expand the knowledge you've already got, how your brain works things out, and how you can get even better at all sorts of maths. Explore amazing algebra, puzzling primes, super sequences, and special shapes. Challenge yourself with quizzes to answer, puzzles to solve, codes to crack, and geometrical illusions to inspire you, and meet the big names and even bigger brains who made mathematical history, such as Pythagoras, Grace Hopper, and Alan Turing. Whether you're a maths mastermind, numbers nerd, or completely clueless with calculations, train your brain to come out on top. This essential ebook explains the basic ideas behind maths, to give young readers greater confidence in their own ability to handle numbers and mathematical problems, and puts the ideas in context to help children understand why maths really is useful and even exciting! Fun, cartoon-style illustrations help introduce the concepts and demystify the maths.

Famed puzzle expert explains math behind a multitude of mystifying tricks: card tricks, stage "mind reading," coin and match tricks, counting out games, geometric dissections, etc. More than 400 tricks. 135 illustrations.

Research in mathematics is much more than solving puzzles, but most people will agree that solving puzzles is not just fun: it helps focus the mind and increases one's armory of techniques for doing mathematics. Mathematical Puzzles makes this connection explicit by isolating important mathematical methods, then using them to solve puzzles and prove a theorem. Features A collection of the world’s best mathematical puzzles Each chapter features a technique for solving mathematical puzzles, examples, and finally a genuine theorem of mathematics that features that technique in its proof Puzzles that are entertaining, mystifying, paradoxical, and satisfying; they are not just exercises or contest problems.

"These visually unique braintwisters will put your puzzle-solving abilities to the ultimate test!"--Page 4 of cover.