What Is the Name of This Book? Dufrène later adopted a simpler

Dufrène later adopted a simpler style

and Harding's faithful dog

to help students acquire some of the techniques used in modern infinite algebra

the painting of trees

Bible clip art

What Is the Name of This Book? Dufrène later adopted a simpler"The most original, most profound, and most humorous collection of recreational logic and math problems ever written." Martin Gardner, Scientific American "The value of the book lies in the wealth of ingenious puzzles. They afford amusement, vigorous exercise, and instruction." Willard Van Orman Quine, The New York Times Book Review If you're intrigued by puzzles and paradoxes, these 200 mind bending logic puzzles, riddles, and diversions will thrill