Synopsis
Multiplying my age by 6 then subtracting 6 produces the same result as subtracting 7 from my age then multiplying by 7. How old am I?
On my broken calculator with keys + - ÷ x =, the only functional number is 7. How can I get 34 to appear in the readout?
A country mints four denominations of coins, in whole numbers of cents. It takes four of these coins to make 21¢, or 24¢, or 25¢, or 26¢. What are the denominations of the coins?
These and almost 300 other mathematical puzzles appear in this original collection, devised by world-renowned mathematicians, puzzle creators, and devoted puzzle lovers. A unique puzzle project, it unites the efforts of a dozen authors, including software engineer Andrea Gilbert and Bram Cohen, author of the P2P BitTorrent protocol.
Seventeen different types of challenges include 3-D puzzles, chess puzzles, connections, dissections, foldings, geometrical puzzles, logic problems, matchstick puzzles, mazes, moving pieces, number puzzles, put-togethers, strimko, sudoku, visual puzzles, weightings, and word puzzles. The difficulty level of each puzzle is marked by stars, ranging from 2 to 5. Average difficulty level is about 3 stars, promising puzzle enthusiasts many entrancing hours of solving and enjoyment.
"synopsis" may belong to another edition of this title.
About the Author
Peter and Serhiy Grabarchuk are part of the Grabarchuk Puzzle Family. Over a period of decades they have produced puzzle books, puzzle apps, interactive puzzles, and more.
"About this title" may belong to another edition of this title.
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Puzzle Box, Volume 1
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Puzzle Box, Volume 1 (Dover Brain Games & Puzzles)
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Puzzle Box, Volume 1 (Dover Brain Games & Puzzles)
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Condition: good. This item is in overall good condition. Covers and dust jackets are intact but may have minor wear including slight curls or bends to corners as well as cosmetic blemishes including stickers. Pages are intact but may have minor highlighting writing. Binding is intact; however, spine may have slight wear overall. Digital codes may not be included and have not been tested to be redeemable and or active. Minor shelf wear overall. Please note that all items are donated goods and are in used condition. Orders shipped Monday through Friday! Your purchase helps put people to work and learn life skills to reach their full potential. Orders shipped Monday through Friday. Your purchase helps put people to work and learn life skills to reach their full potential. Thank you! Seller Inventory # 466OE3004J4T
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Puzzle Box, Volume 1 (Dover Brain Games & Puzzles)
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Puzzle Box, Volume 1
Published by
Dover Publications, Incorporated, 2016
ISBN 10: 0486810046
ISBN 13: 9780486810041
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Seller: Better World Books, Mishawaka, IN, U.S.A.
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Puzzle Box, Volume 1
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Puzzle Box, Volume 1 (Dover Brain Games & Puzzles)
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Puzzle Box, Volume 1 (Dover Brain Games and Puzzles)
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Puzzle Box, Volume 1 (Dover Brain Games & Puzzles)
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