The Pyramids at Giza in Egypt have stood for over 4,500 years, and the amazing feat of their construction is shrouded in mystery. This superb collection of specially commissioned photographs tries to answer some of the riddles about them and the people who built them.

Martin Gardner begins Riddles with questions about splitting up polygons into prescribed shapes and he ends this book with an offer of a prize of $100 for the first person to send him a 3 x# magic square consisting of consecutive primes. Only Gardner could fit so many diverse and tantalizing problems into one book.
This material was drawn from Gardner's column in Issac Asimov's Science Fiction Magazine. His riddles presented here incorporate the responses of his initial readers, along with additions suggested by the editors of this series.

Here's a delightful collection of American riddles and puzzles, illustrated with wonderfully quirky cartoons. 101 American English Riddleswill amuse you for hours - while giving insight into American idioms and humor. Harry Collins has arranged 101 riddles into nine sections based on the type of riddle, including: Riddles with words with more than one meaning, Riddles that trick you, Riddles that use numbers and logic, Riddles that use idioms, and more! And he has turned them over to illustrator Joe Kohl, whose eye-grabbing cartoons give you clues to the answers - or lead you astray!

You'll find help everywhere you need it, including explanations of wordplays, idioms, and culture. Where helpful, there are also dialogues or natives that show how the language in the riddle is used in everyday American English.

This book will help nonnative speakers of English improve their use of English at its most entertaining - while native speakers will enjoy seeing these favorite riddles illustrated with such wit and whimsy. 101American English Riddles will have you scratching your head in puzzlement or slapping your thigh with laughter!