Problems for Puzzlebusters

See if you can answer these questions:

What would be the worst day of the year on which to be told that you had just won a big cash prize?

Which digit would you use least often if you wrote down all the numbers from 1 to 1,000,000?

Why can't all the people in a stadium clap in unison?

Why are so many comic-strip characters left-handed?

Are zip codes more likely to end in three 1's or three 9's?

Why is it hard to see into a car with heavily tinted windows, even though the people inside have no difficulty seeing out?

Does the sequence 0, 1, 3, 6, 10, 15, 21, . . . include any numbers that end in 2?

If Tom and Dick are Harry's two brothers-in-law, can Tom's wife be Dick's wife's sister-in-law?

PROBLEMS FOR PUZZLEBUSTERS uses brain-twisters and elementary mathematics to teach you how to solve all kinds of problems. Written by a professional research scientist who has taught at the college, secondary, and primary levels, this book is a treasure trove of challenging fun, a learning experience with universal appeal, and the ultimate resource book for school mathematics teachers. Part I summarizes the methods and illustrates them with examples, giving step-by-step instructions on getting started, working out the details, and checking the answers. Part II contains one of the most extensive recreational problem collections ever compiled: over 600 problems, many never published before everything from riddles to the risks in Russian roulette, suitable for classroom use or your own amusement. Part III gives solutions obtained via the techniques described in Part I, explaining how to use what you have learned to solve similar problems next time. The three parts are fully illustrated and cross-referenced.

Hardcover, 358 pages. ISBN: 978-0963321701. Price: $24.95; no charge for shipping inside U.S.; 20% discount for educational uses and for orders of more than ten copies.

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