Puzzles
epub |eng | 2012-03-05 | Author:Derrick Niederman [Niederman, Derrick]

This puzzle is a bit of a fooler. It is tempting to believe that because the liquid originally taken from the oil container was pure oil, whereas the amount transferred ...
( Category: Quizzes July 19,2014 )
epub, pdf |eng | 2011-01-30 | Author:Ian Livingstone

Score yourself using the TOUGH score table and turn to 11. 200 Dots and Triangles Start the clock! How many triangles of all possible sizes can you get from this ...
( Category: Logic May 31,2014 )
epub, azw3 |eng | | Author:Lewis Carroll

* * * WORKS BY LEWIS CARROLL. ALICE'S ADVENTURES IN WONDERLAND. With Forty-two Illustrations by TENNIEL. Crown 8vo, cloth, gilt edges, price 6s. Seventy-fifth Thousand. TRANSLATIONS OF THE SAME--into French, ...
( Category: Puzzles March 27,2014 )
mobi, epub |eng | 2010-08-03 | Author:Garth Sundem

• Most healthy participants take between forty and fifty flips to recognize good and bad decks and then stick to the good ones. But galvanic skin tests, like those of ...
( Category: Logic & Brain Teasers March 25,2014 )
mobi, epub |eng | 2010-08-03 | Author:Garth Sundem

• Most healthy participants take between forty and fifty flips to recognize good and bad decks and then stick to the good ones. But galvanic skin tests, like those of ...
( Category: Logic & Brain Teasers March 25,2014 )
epub, mobi |eng | 2012-05-15 | Author:Raymond M. Smullyan [Smullyan, Raymond]

5 • The Bird W’ “Show that from B, T, and M you can derive a bird W’ satisfying the following condition: W’xy = yxx “We might call W’ a ...
( Category: Puzzles March 25,2014 )