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OverviewFollow the hour hand and minute hand of a clock for 24 hours. How many times do they form a right angle?Timothy's house has several rooms, each of which has an even number of doors, including doors that lead outside. Is the number of outside doors even or odd?Stimulating and delightful, this collection of puzzles features original and classic brainteasers. The author, a puzzle columnist for Le Monde, specially selected these mind-benders for the widest possible audience, ensuring that they're neither too hard for those without a math background nor too easy for the mathematically adept. All puzzles are clearly stated and accurately answered at the back of the book - and they're great fun to consider, whether you crack them or not. Includes a Foreword by Martin Gardner. Full Product DetailsAuthor: Pierre Berloquin , Denis Dugas , Martin GardnerPublisher: Dover Publications Inc. Imprint: Dover Publications Inc. Edition: First Edition, First ed. Dimensions: Width: 0.80cm , Height: 14.00cm , Length: 21.60cm Weight: 0.202kg ISBN: 9780486789583ISBN 10: 0486789586 Pages: 164 Publication Date: 25 September 2015 Audience: General/trade , General Format: Paperback Publisher's Status: Active Availability: In Print  This item will be ordered in for you from one of our suppliers. Upon receipt, we will promptly dispatch it out to you. For in store availability, please contact us. Table of ContentsReviewsAuthor InformationPierre Berloquin is a French operations research engineer, writer, and game designer who has written more than 40 books in the area of recreational mathematics. Tab Content 6Author Website:Countries AvailableAll regions |
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