En savoir plus sur le livre
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.
Achat du livre
Dover Brain Games & Puzzles: Puzzle Box, Volume 1, Peter Grabarchuk, Serhiy Grabarchuk, Ed Pegg Jr., Tanya Grabarchuk, Andrea Gilbert, Bram Cohen, Peter Winkler, Brian Caines, David Krum, Alex Gribarchuk
- Langue
- Année de publication
- 2016
- product-detail.submit-box.info.binding
- (souple)
Modes de paiement
Personne n'a encore évalué .
- Titre
- Dover Brain Games & Puzzles: Puzzle Box, Volume 1
- Langue
- Anglais
- Auteurs
- Peter Grabarchuk, Serhiy Grabarchuk, Ed Pegg Jr., Tanya Grabarchuk, Andrea Gilbert, Bram Cohen, Peter Winkler, Brian Caines, David Krum, Alex Gribarchuk
- Publié
- 2016
- Format
- souple
- Pages
- 96
- ISBN10
- 0486810046
- ISBN13
- 9780486810041
- Séries
- Mots clés
- Nonfiction, Livres pour enfants, Jeux, Activités pour enfants, Puzzles, Quiz
- Description
- 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.