Mathematical Quickies: 270 Stimulating Problems with Solutions
For the mathematics enthusiast of any age or level of sophisitcation, this stimulating treasury of unusual math problems offers unlimited opportunity for mind-biggling recreation. Carles W. Trigg, Dean Emeritus and Professor Emeritus at Los Angeles City College and one of the country's best-known problemists, has compiled nearly 300 mathematical brainteasers from the field of of arithmetic, algebra, plane and solid geometry, trigonometry, number theory, and such general recreational mathematics and dissections, cryptarithms and magic squares. The object of each problem is to find the quickest, most elegant solution - they are often unorthodox and there is usually and element of surprise in each. Ranging from the simple to complex, problems are both original with the author and the work of over 100 other qualified mathematicians. Most are rarely seen or entirely new; all challenge the reader to devise solutions more elegant than the ones provided.
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angle arithmetic progression Available in U.S. base bisector bisects Captions coefficients color column common congruent consecutive cube cylinders decimal determine diagonals diameter digits Dissection divided divisible divisor Dodecagon dominoes edges equal equation equilateral triangles faces factor Fibonacci Find the number follows four H. S. M. Coxeter Hence Heterosquare Howard Eves illustrations inches inscribed circle integers intersect January Klamkin Leo Moser Lewis Carroll M. S. Klamkin magic square March Martin Gardner MATHEMATICAL midpoint multiplied November number of odd octahedron odd integers odd number pairs parallel parallelogram perimeter perpendicular photographs plane points polygon polyhedron positive integers problem Prove PUZZLES Pythagorean quadrilateral radius ratio regular octahedron regular tetrahedron relatively prime rhombic dodecahedron right triangle roots rows segments sequence Show sides solution sphere square number Square Triangular theorem triangle ABC triangular number Umbugio vertex vertices volume zero