Sharpen your mind and flex your mental muscles with this light and witty collection of 113 brainteasers! The dynamic compilation features the Four Famous Problems, including Archimedes' Cattle Problem, Impossible Division, and Apple and Unit Problems. Additional brainteasers cover a variety of mathematical topics, from distance and measurements to money, speed, time, and more. Problems are primarily solved using the mathematics of daily life--addition, subtraction, multiplication, division, and fractions--plus algebra and clear, logical thinking. Most have solutions; some have more than one, while others are left to the skills of the reader. A captivating experience for puzzle aficionados.