536 Curious Problems and Puzzles by Henry E. Dudeney, Martin Gardner

By Henry E. Dudeney, Martin Gardner

For 2 a long time, self-taught mathematician Henry E. Dudeney wrote a puzzle web page, "Perplexities," for The Strand Magazine. Martin Gardner, longtime editor of Scientific American's mathematical video games column, hailed Dudeney as "England's maximum maker of puzzles," unsurpassed within the volume and caliber of his innovations. This compilation of Dudeney's long-inaccessible demanding situations attests to the puzzle-maker's present for growing witty and compelling conundrums.
This treasury of fascinating puzzles starts off with a variety of arithmetical and algebraical difficulties, together with demanding situations related to funds, time, velocity, and distance. Geometrical difficulties keep on with, besides combinatorial and topological difficulties that function magic squares and stars, course and community puzzles, and map coloring puzzles. the gathering concludes with a chain of online game, domino, fit, and unclassified puzzles. ideas for all 536 difficulties are incorporated, and captivating drawings brighten up the publication.

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Extra resources for 536 Curious Problems and Puzzles

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Using numbers 1 through 10, fill in the X's below to create a "difference triangle'' with the same conditions. If you'd like a little stiffer challenge, try this using the num­ bers 1 through 15 in five rows. xxxx 5 X X X 7 X 67. (17 :8) as (25: 7) :: (32:5) as ( ? 68. Logician George Summers's puzzles are among the best. His logic brainteasers offer a clear, straightforward presentation of the puzzle, yet fully test the deductive reasoning process of even the best puzzle enthusiasts. His book The Great Book ofMind Teasers & Mind Puzzlers will keep you busy for days.

How many individual cubes are in this configuration? All rows and columns in the figure are complete unless you actually see them end. 90. Thirteen boys and girls wait to take their seats in the same row in a movie theater. The row is thirteen seats long. They decide that after the first person sits down, the next person has to sit next to the first. The third sits next to 50 one of the first two and so on until all thirteen are seated. In other words, no person can take a seat that separates him from at least one other person.

The numbers 1 through 6 are arranged so that any number resting between and below two other numbers is the difference between those two numbers. Using numbers 1 through 10, fill in the X's below to create a "difference triangle'' with the same conditions. If you'd like a little stiffer challenge, try this using the num­ bers 1 through 15 in five rows. xxxx 5 X X X 7 X 67. (17 :8) as (25: 7) :: (32:5) as ( ? 68. Logician George Summers's puzzles are among the best. His logic brainteasers offer a clear, straightforward presentation of the puzzle, yet fully test the deductive reasoning process of even the best puzzle enthusiasts.

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