دانلود کتاب Fantastic Book of Math Puzzles

Welcome to Pymm, a land inhabited by humans, elves, half-elves, dwarves, and even Minotaurs. Here, kings rule, the Knights of the Golden Sword are the bravest heroes of the land, and armies small and large fight off invaders. Pymm is also a land where dragons and other strange creatures (such as the repulsive, monstrous glubs) are familiar menaces, wizards use their great powers for good or evil, and common people (stone workers, millers, bridge builders, cart drivers, ferry operators, and so forth) go about their daily lives finding amusement at fairs and in the festivities at the castles of the local kings.As you wander through these eighty-plus puzzles set in Pymm, you will find that some are easy and some that are genuinely difficult. Hopefully, you will find many that irresistibly challenge you. My personal favorites are marked with asterisks.The puzzles are not arranged in any order of difficulty. This has been done deliberately so that all puzzle solvers, from novices to experts, will be interested in perusing the entire book. There are hints to help you solve some of the puzzles, but use these clues only if you must. First give yourself a chance to solve them on your own. Many of the puzzles can be solved without using algebra, and some require only the most basic algebra knowledge.Suggestions and responses are not only welcome, they are wanted. Its especially nice when a reader finds an easier or more interesting solution to a puzzle.—Margaret C. Edmisto