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| | intrinsic.html |
 | | Keywords matchstick puzzles, billiard ball computer, pouring, counting, history of numbers, Mayan mathematics, abacus, calendars, measurement of time, unicursal problems, squaring the circle, rolling circles, number curiosities, number puzzles |
 | | Keywords puzzles, matchstick puzzles, moving counters puzzles, number puzzles, digital puzzles, arithmetic puzzles, geometric puzzles, geometric fallacies, unicursal problems, river crossings, shortest path, geodesics, spider and fly, card tricks, dice tricks, number tricks, logic puzzles, mysteries, cryptograms, counterfeit coins, skeleton division, Arithmetic restorations, alphametics, monkey and coconuts, circular permutations, combinatorial puzzles |
 | | Keywords History of numbers, Arithmetic puzzles, Figurate numbers, gnomic numbers, geometric puzzles, railway shunting, tiling, tilings, tessellations, fifteen puzzle, chinese rings, magic squares, graph theory, duplicating the cube, Delian problem, trisection of an angle, squaring the circle, Konigsberg bridges, unicursal problems, labyrinths, mazes, points and lines, Astrology |
| www.ucalgary.ca /lib-old/sfgate/strens/intrinsic.html (3873 words) |
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