Title
HardtoSolve Math Puzzles,Used
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Product Description Put your mathematical thinking cap onbecause even though these puzzles are toughies, they take insight and brainwork to solve, not a knowledge of calculus or linear algebra or any other kind of advanced math. Consider for a moment:* How can you divide a regular pentagon into five identical pentagonal shapes?* What is the only decade in American history to contain four primenumbered years?* What three right triangles with integer sides have areas numerically equal to twice their perimeters? Don't worry if the answers don't spring to mind immediately; you'll have plenty of company. Compute without calculators; study the 'survival of the splittest' by arithmetically analyzing a little amoeba reproduction; and investigate whether or not a rich man's children are getting a 'square deal' with their inheritance. Just don't give up, because you'll have a lot of satisfaction when you figure them out. About the Author Newton Center, MA
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