## Ingenious Mathematical Problems and MethodsFor two decades, an international readership of workers in applied mathematics submitted their favorite puzzles to a mid-twentieth-century column, The Graham Dial. This original collection features 100 of the publication's very best problems, with themes ranging from logic and engineering situations to number theory and geometry. Each problem was specifically selected for its widely differing modes of solution, and most include several methods of solution plus assessments of their efficacy.In checking their solutions against the book's, readers may find that their interest in the puzzles increases. The search for an answer can develop into a challenge to improve upon existing solutions, as in a friendly competition among dozens of keen-witted, problem-solving engineers and mathematical puzzle fans. More than two dozen "mathematical nursery rhymes" appear throughout the book, which concludes with a final section of 25 "quickies" that will test readers' speed. |

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algebra analytical geometry angle answer applied approach axis B. F. Goodrich balls base Brecksville Bundy Tubing calculus circle coins column course cube curvature curve deﬁnes deﬁnition diagram DIAL digit Diophantus distance divided draw drawn equal equation equilateral triangle familiar ﬁgure ﬁnd ﬁnding ﬁrst ﬁve ﬁxed follows four fraction gear gives half hour hypotenuse inches inﬁnite integral interesting intersecting inversion latus rectum length little Euclid logarithmic logarithmic spiral MATHEMATICAL NURSERY RHYME method miles minimum multiplied obviously original pair parabola parallel path perimeter perpendicular plot plow possible problem Pythagoras Quickie quotient radius ratio readers readily recurring decimal remainder respectively right triangle rotates scale sequences shingle shortest side similar triangles simplest slice snow solved speed spiral square root straight line tangent tion twenty questions vector velocity votes weight wires wrote zero