Amusements in Mathematics

"Amusements in Mathematics" by Henry Ernest Dudeney Henry Ernest Dudeney was an English author and mathematician who specialized in logic puzzles and mathematical games. He is known as one of the country's foremost creators of mathematical puzzles. This book contains 430 puzzles, problems, paradoxes, and brain-teasers presented by a master of mathematical ingenuity. Virtually every sort of mathematical or logical poser is included in this extraordinary collection.