FLEX YOUR brain power like never before! From acclaimed author Dr. Gary Gruber, whose proven critical-thinking methods have sold more than seven million books, this collection of mind-bending brain teasers is sure to challenge even the most experienced problem solver. Inside are logic puzzles, riddles, maddening math problems, mental games, and more! A ship is twice as old as the ship's boiler was when the ship was as old as the boiler is. The ratio of the boiler's age now to the ship's age now is what? What English word contains all the vowels, in alphabetical order? What is the three-digit number that can be made from the digits 2, 3, 5, and 7 where no two digits in the three-digit number are alike, and where the three-digit number is a multiple of each of the digits chosen? Stumped? Dr. Gruber reveals the fascinating explanations and detailed strategies for solving even the trickiest problems using his exclusive Gruber Method. DISCLAIMER: The brain teasers in this book may get you so wrapped up in critical thinking that you may not be able to do your regular work until you solve them! Any abrupt or gradual increase in creativity, intelligence, or motivation to get a better job suited to your newfound talents is strictly the reader's responsibility. For more than thirty years, Gary R. Gruber, PhD, has been recognized as a leading expert on the SAT, test-taking methods, and critical-thinking skills. His methods have been used by PBS, Sylvan Learning Centers, Grolier's Encyclopedia, and school districts throughout the country. Dr. Gruber's innovative problem-solving strategies make up the heart of the new MyMaxScore's online test prep (www.mymaxscore.com).

This compilation of long-inaccessible puzzles by a famous puzzle master offers challenges ranging from arithmetical and algebraical problems to those involving geometry, combinatorics, and topology, plus game, domino, and match puzzles. Includes answers.

A great way to have fun and build brain power, Brain Teasers offers a variety of games to delight and challenge even the most advanced puzzler. Brain Teasers shows off some outrageously fun new mindbenders, like anasearches (a combination of an anagram, a crossword, and a word search), numberlockers (think of a crossword puzzle with numbers instead of words), and alphabetics (a miniature crossword puzzle that uses each letter of the alphabet exactly once). Perfect for anyone who sits down with the New York Times crossword puzzle every morning or works through Sudoku puzzles on the way home, this book is guaranteed to excite your mind and jump-start your brain.

The inside track on how to beat the "logic puzzle" job interview As if job interviews weren't nerve-wracking enough, many companies, in their pursuit of the brightest and best, have begun beleaguering applicants with tests of logic, creativity, and analytical abilities. Many firms have replaced traditional interview questions such as "Tell us about yourself" or "What's your biggest weakness?" with mind-benders such as: Why are beer cans tapered at both ends? How many piano tuners are there in the world? How many Ping-Pong balls can you stuff into a Boeing 747? How would you design a bathroom for the CEO of the company? If you could remove any one of the 50 U.S.states, which one would it be? In How to Ace the Brain Teaser Interview, bestselling careers author John Kador gives readers the inside track on this new interview technique. He provides 75 puzzles actually used by HR departments across the nation, and he offers tips on how to solve them and present the solutions so as to make the best possible impression.

You can be sitting in the train working on a puzzle but it can take you far away from the everyday. Before you know it you're at your stop or about to pass it. It's not like you were even in the train. It's something different, something removed from the ordinary." --Maki Kaji, Japanese Times The Nation's No. 1 Newspaper offers puzzlesmiths the ultimate cranium compendium boasting five challenging mind teasers. USA TODAY is America's most recognized newspaper reaching more than 5 million people each day. Now, USA TODAY has collected five popular game formats into one book, including: Logic Puzzles, Crossword, Killer Sudoku, and Hitori. Complete with 400 puzzles (that's twice the size of comparable game books), USA TODAY Jumbo Puzzle Book includes an introductory chapter that offers solution tips as well as a concluding chapter that reveals all the answers. Pen and pencil puzzles are big business. According to a national poll by the American Society on Aging, 84 percent of people report that they spend time daily in activities that are good for brain health.

Discover the adventure and excitement of mathematical puzzles. Match your wits with the human computer. Sharpen your intellect, delight your friends and enjoy hours of purposeful entertainment. Mathematics is not always hard, mind-boggling stuff. It can also be simple, delightful and interesting. Many famous mathematicians are known to be devoted to peg jumping puzzles. It is perhaps this kind of play that leads to scientific discoveries. The celebrity author, Shakuntala Devi, is regarded as 'authentic heroine of the twentieth century'. She calculates faster than the fastest computer, is listed in the Guinness Book of World Records and continues to amaze audiences around the world with her feats of calculation.

This book contains exercises connected with some of the fun or more unusual aspects of the English languageand with games that typically a native English speaker would do. The games have been adapted into a manageable format, but the actual vocabulary contained has not been changed. The types of games include: lateral thinking games, riddles, logic tests, anagrams, palindromes, proverbs, limericks, word ladders, tongue twisters, plus a whole host of other word-related games. Easy English! is a series of books to help you learn and revise your English with minimal effort. You can improve your English by reading texts in English that you might well normally read in your own language e.g. jokes, personality tests, lateral thinking games, wordsearches. doing short exercises to improve specific areas grammar and vocabulary, i.e. the areas that tend to lead to the most mistakes - the aim is just to focus on what you really need rather than overwhelming yourself with a mass of rules, many of which may have no practical daily value Other books in the Easy English!series include: Wordsearches: Widen Your Vocabulary in English Test Your Personality: Have Fun and Learn Useful Phrases Word games, Riddles and Logic Tests: Tax Your Brain and Boost Your English Top 50 Grammar Mistakes: How to Avoid Them Top 50 Vocabulary Mistakes: How to Avoid Them

What's challenging, fun, and sure to give your brain a workout? This riddle book for kids ages 9-12! Riddle me this—can you solve these super hard word puzzles? You sure can! Featuring nearly 200 brain benders, this riddle book for kids ages 9-12 is the ultimate option for clever children who love thinking outside the box. This big riddle book for kids ages 9-12 will test the limits of your imagination. Start things off with handy tips and simple warm-up riddles that will help you twist your thinking and get creative. What's the difference between a bird and a fly? Tie your brain in knots and find out inside! Tons of tough riddles—Build your problem-solving abilities and stretch your creative thinking skills as you unravel all kinds of perplexing puzzles. Learn about history's biggest puzzlers—Try your hand at some of the world's most famous riddles, like the Riddle of the Sphinx or Bilbo's riddle from The Hobbit, while also learning fun facts about their history. Easy to use—Tips, hints, and an organized answer key in the back make it easy to get solving with your friends and family anytime. Overcome the mind-blowing mysteries inside the very best riddle book for kids ages 9-12!

100 Math Brainteasers (Grade 7-10) is a subtle selection of one hundred arithmetic, algebra, and geometry assignments, which efficiently train the mind in math skills. It will be helpful for students attending High School and also in preparation for Mathematical competitions or Olympiads at a younger age. The assignments can equally be used in the classroom or in extracurricular activities. The fun and games are delightful, original, and solving them is even more enjoyable thanks to the funny illustrations. Most of the math problems do not require any exceptional mathematical proficiency, but above all, they challenge one’s creativity and ability to think logically. Only a few solicit the knowledge of algebraic expressions and rules of geometry.

Mathematicians call it the Monty Hall Problem, and it is one of the most interesting mathematical brain teasers of recent times. Imagine that you face three doors, behind one of which is a prize. You choose one but do not open it. The host--call him Monty Hall--opens a different door, always choosing one he knows to be empty. Left with two doors, will you do better by sticking with your first choice, or by switching to the other remaining door? In this light-hearted yet ultimately serious book, Jason Rosenhouse explores the history of this fascinating puzzle. Using a minimum of mathematics (and none at all for much of the book), he shows how the problem has fascinated philosophers, psychologists, and many others, and examines the many variations that have appeared over the years. As Rosenhouse demonstrates, the Monty Hall Problem illuminates fundamental mathematical issues and has abiding philosophical implications. Perhaps most important, he writes, the problem opens a window on our cognitive difficulties in reasoning about uncertainty.