Puzzle Box, Volume 1

Dover Publications - How old am i?on my broken calculator with keys + - ÷ x =, the only functional number is 7. Brand new item / Unopened Product. Multiplying my age by 6 then subtracting 6 produces the same result as subtracting 7 from my age then multiplying by 7. Seventeen different types of challenges include 3-d puzzles, weightings, matchstick puzzles, dissections, geometrical puzzles, moving pieces, foldings, logic problems, sudoku, chess puzzles, strimko, put-togethers, visual puzzles, mazes, connections, number puzzles, and word puzzles.

9780486810041. Dov-10041. Dover. The difficulty level of each puzzle is marked by stars, ranging from 2 to 5. A unique puzzle project, including software engineer Andrea Gilbert and Bram Cohen, it unites the efforts of a dozen authors, author of the P2P BitTorrent protocol. How can i get 34 to appear in the readout?A country mints four denominations of coins, in whole numbers of cents.

Puzzle Box, Volume 1 - Average difficulty level is about 3 stars, promising puzzle enthusiasts many entrancing hours of solving and enjoyment. What are the denominations of the coins?These and almost 300 other mathematical puzzles appear in this original collection, puzzle creators, devised by world-renowned mathematicians, and devoted puzzle lovers.

It takes four of these coins to make 21¢, or 25¢, or 24¢, or 26¢.





Puzzle Box, Volume 2

Dover Publications 44069497 - This successor to puzzle box, volume 1 presents another 300 challenges created by a team of a dozen renowned mathematicians and puzzle creators. Seventeen different types of puzzles include 3-d puzzles, sudoku, put-togethers, geometrical puzzles, matchstick puzzles, strimkos, mazes, number puzzles, connections, dissections, foldings, moving pieces, logic problems, chess puzzles, and visual and word puzzles.

In a foot race, Abe was neither first nor last. Cal beat doug, abe beat ed but was beaten by Cal, Bruce beat Abe, and Doug beat Bruce. How can you measure out 9 pounds of nails? Find identical jigsaw puzzle pieces, rearrange digits to form correct equations, solve crossword puzzles that spell out pithy quotations, and revel in other original brainteasers.

Puzzle Box, Volume 2 - The difficulty level of each puzzle is marked by stars, ranging from 2 to 5; 3 stars indicate an average-level challenge. In the usa, is it possible to travel by car in such a way that you visit exactly seven states and enter them in alphabetical order? What do these words have in common: commerce, funnel, canoodle, recessive? You have 12 pounds of nails and a large 2-pan balance.

. Dover. Whether you prefer picture puzzles or word puzzles or number puzzles, this fun-filled collection guarantees hours of entertainment. Who was last? arrange four chess pieces so that every piece attacks exactly four empty squares. Dov-13486.





Puzzle Box, Volume 3

Dover Publications - What relation is she to raoul?decipher hidden quotes, reposition matchsticks to form equilateral triangles, navigate complex mazes, and solve scores of other intriguing challenges with this puzzle treasury. The difficulty level of each puzzle is marked by stars, ranging from 2 to 5; 3 stars indicate an average-level challenge.

. Dov-13486. Brand new item / Unopened Product. Complete solutions for every puzzle are included. Dover. A car dealer sells two cars for $9, 999 each — one at a 10% profit, the other at a 10% loss. The third in a series of collected brain-teasers, conundrums, and riddles, this volume presents a splendid variety of puzzles created by a dozen renowned mathematicians and puzzle lovers.

Puzzle Box, Volume 3 - The 300 original exercises, connections, including: 3-d puzzles, foldings, dissections, sudoku, mazes, number puzzles, strimkos, matchstick puzzles, moving pieces, put-togethers, include 19 different kinds of puzzles, geometrical puzzles, printed in full color, logic problems, chess puzzles, and visual and word challenges.

9780486813486. Overall, did the dealer make or lose money?how many common words of six letters can you make from "machine, " using each letter only once per word?Raoul asked his brother's wife's mother-in-law's only husband's only daughter to join him and his wife for lunch.





Strimko Book 1: 150 Easy-to-Master Number Logic Puzzles

Independently published - 9780486813486. Learn more at strimko. Com. Happy puzzling! Dov-13486. Puzzles are arranged from the easiest to the hardest ones so that you'll progress in solving skills with each next puzzle. Strimko challenges were handcrafted by Helen, Serhiy, Tanya, and Peter Grabarchuk, and up to date hundreds of original Strimko puzzles were published in various forms and platforms.

Strimko is a logic number puzzle invented by The Grabarchuk Family in 2008. It is based on the idea of latin squares described by a Swiss mathematician and physicist Leonhard Euler 1707-1783 in the 18th century. All strimko puzzles are solvable with a pure logic, no special knowledge is required. Brand new item / Unopened Product.

Strimko Book 1: 150 Easy-to-Master Number Logic Puzzles - Strimko uses only three basic elements: rows, columns, and streams. Cells in the grid are organized into several streams of equal length, which often run diagonally and even branching. Such mechanics creates entangled patterns resulting in interesting challenges and unusual logic. This book contains a specially designed collection of 150 easy-to-master puzzles with 4 x 4 through 7 x 7 grid sizes.

All elements have equal numbers of cells, column, and the goal is to make each row, and stream containing the whole set of specified numbers. Dover.





The Original Area Mazes: 100 Addictive Puzzles to Solve with Simple Math―and Clever Logic!

The Experiment - Are you a sudoku fanatic? Do you play brain games to stay sharp? Did you love geometry. Brand new item / Unopened Product. Dover. The puzzles get harder and harder! once you match wits with area mazes, you’ll be hooked! Your quest is to navigate a network of rectangles to find a missing value. Just remember:area = length × widthUse spatial reasoning to find helpful relationshipsWhole numbers are all you need.

You can always get the answer without using fractions! Originally invented for gifted students, area mazes menseki meiro, have taken all of Japan by storm. The math is easy. The rules are simple. 9780486813486. Or would you like to finally show it who’s boss? Feed your brain some area mazes—they could be just what you’re craving! Dov-13486.





The Big, Big, Big Book of Brainteasers

Puzzlewright - Dover. 9780486813486. Here's the next big thing in puzzles! This spectacular collection offers visual puzzles of every type, shape, and size-all in lavish color. Solvers can wrap their minds around cube puzzles, mazes, paper clip teasers, puzzles with patterns, construction problems, and more. Brand new item / Unopened Product.

These brilliant brainteasers are a challenge for the mind and a treat for the eyes. Dov-13486. Puzzels.





Can You Solve My Problems?: Ingenious, Perplexing, and Totally Satisfying Math and Logic Puzzles

The Experiment - Experiment. Brand new item / Unopened Product. 9780486813486. Grab your pencil and get puzzling! Dov-13486. Armed with logic alone, you’ll detect counterfeit coins, navigate river crossings, and untangle family trees. Puzzels. It can be done! the ultimate casebook for daring puzzlers, Can You Solve My Problems? also tells the story of the puzzle—from ancient China to Victorian England to modern-day Japan.

Puzzle lovers, rejoice! bestselling math writer Alex Bellos has a challenge for you: 125 of the world’s best brainteasers from the last two millennia. Then—with just a dash of high school math—you’ll tie a rope around the Earth, match wits with a cryptic wizard, and use four 4s to create every number from 1 to 50





Strimko 5x5: 150 Medium Number Logic Puzzles

Independently published - Learn more at strimko. Com. Happy puzzling! Dov-13486. 9780486813486. Cells in the grid are organized into several streams of equal length, which often run diagonally and even branching. Puzzels. All strimko puzzles are solvable with a pure logic, no special knowledge is required. Experiment. It is based on the idea of latin squares described by a Swiss mathematician and physicist Leonhard Euler 1707-1783 in the 18th century.

This book contains a specially designed collection of 150 medium puzzles with 5 x 5 grid sizes. All elements have equal numbers of cells, and the goal is to make each row, column, and stream containing the whole set of specified numbers. Brand new item / Unopened Product. Strimko is a logic number puzzle invented by The Grabarchuk Family in 2008.

Strimko 5x5: 150 Medium Number Logic Puzzles - Such mechanics creates entangled patterns resulting in interesting challenges and unusual logic. Strimko challenges were handcrafted by Helen, and Peter Grabarchuk, Tanya, Serhiy, and up to date hundreds of original Strimko puzzles were published in various forms and platforms. Puzzles are arranged from the easiest to the hardest ones so that you’ll progress in solving skills with each next puzzle.

Strimko uses only three basic elements: rows, columns, and streams. Dover.





GEOMETRY SNACKS, Ages 8-80

Tarquin Publications - Puzzels. Experiment. Brand new item / Unopened Product. A mathematical puzzle book filled with geometrical figures and questions designed to challenge, confuse and ultimately enlighten enthusiasts of all ages. Dover. 9780486813486. Each puzzle is carefully designed to draw out interesting phenomena/ relationships between the areas and Dov-13486.





Strimko 4x4: 150 Easy Number Logic Puzzles

Independently published - This book contains a specially designed collection of 150 easy puzzles with 4 x 4 grid sizes. Strimko uses only three basic elements: rows, columns, and streams. Happy puzzling! Dov-13486. 9780486813486. Strimko challenges were handcrafted by Helen, Serhiy, and Peter Grabarchuk, Tanya, and up to date hundreds of original Strimko puzzles were published in various forms and platforms.

It is based on the idea of latin squares described by a Swiss mathematician and physicist Leonhard Euler 1707-1783 in the 18th century. Strimko is a logic number puzzle invented by The Grabarchuk Family in 2008. Puzzles are arranged from the easiest to the hardest ones so that you’ll progress in solving skills with each next puzzle.

Strimko 4x4: 150 Easy Number Logic Puzzles - Brand new item / Unopened Product. Puzzels. Experiment. All elements have equal numbers of cells, and the goal is to make each row, column, and stream containing the whole set of specified numbers. All strimko puzzles are solvable with a pure logic, no special knowledge is required. Dover. Such mechanics creates entangled patterns resulting in interesting challenges and unusual logic.





This is Not Another Maths Book: A smart art activity book

The Ivy Press - Puzzels. Dover. Discover the clever craft behind the beautiful numbers and patterns of math with Anna Weltman's This is Not Another Math Book, full of fun drawing challenges based on math tricks and rules. Kids learn incredible math facts as they complete the beautiful designs. Brand new item / Unopened Product.

But remember, this is NOT another math book. From perfect paper polygons and topological transformation flip books, from pizza cutting puzzles and loop-de-loop number spirals, they'll discover the art in math, and the math in art. Or is it? dov-13486. 9780486813486. Experiment.