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"aha! Gotcha" and "aha! Insight" are here combined as a single volume. The aha! books, as they are referred to by fans of the author Martin Gardner, contain 144 wonderful puzzles from the reigning king of recreational mathematics. In this combined volume, you will find puzzles ranging over geometry, logic, probability, statistics, number,time, combinatorics, and word play. Gardner calls these puzzles aha! problems. He explains that aha! problems "seem difficult, and indeed are difficult if you go about trying to solve them in traditional ways. But if you can free your mind from standard problem solving techniques, you may be receptive to an aha! reaction that leads immediately to a solution. Don't be discouraged if, at first, you have difficulty with these problems. Try your best to solve each one before you read the answer. After a while you will begin to catch the spirit of offbeat , nonlinear thinking, and you may be surprised to find your aha! ability improving." Studies show that persons who possess a high aha! ability are all intelligent to a moderate level, but beyond that level there seems to be no correlation between high intelligence and aha! thinking. So dig into some of the puzzles in this book, and prepare yourself for an aha! experience.

前言 Introduction

第一章 组合 Chapter 1 Combinatorial aha!

泡泡糖问题 A Sticky Gum Problem

乒乓赛难题 The Ping Pong Puzzle

奎贝尔的玻璃杯 Quibble's Glasses

令人困窘的道路 Perplexing Paths

搞错了的婴儿 The Bewildered Babies

奎贝尔的塑料杯 Quibble's Cups

炙肉片策略 Steak Strategy

难铺的瓷砖 The Troublesome Tiles

奎贝尔的动物 Quibble's Pets

药品小混 The Medicine Mix-up Small

药品大混 The Medicine Mix-up Big

断金链 The Broken Bracelet

第二章 几何 Chapter 2 Geometry aha!

巧分乳酪 Crafty Cheese Cuts

隐蔽的尺寸 Dimensions in Disguise

骑士大调动 The Big Knight Switch

奇妙的刀 Surprising Swords

航空飞行 Payoff at the Poles

奎贝尔的火柴 Quibble's Matches

巧妙的划分 Devilish Divisions

尤卡里特小姐的立方体 Miss Euclid's Cubes

地毯难题 Carpet Confusion

蛋糕的稀奇切法 The Curious Cake Cut

第三章 数字 Chapter 3 Number aha!

掰开的唱片 Broken Records

海峡怪兽 Loch Ness Monster

多余的一个 One Too Many

眼睛和脚 Eyes and Legs

撞车事件 The Big Bump

神秘的商品 Mysterious Merchandise

未列入电话簿的电话号码 The Unlisted Phone Number

倒霉的帽子 Hapless Hat

钱币问题 Money Matters

亨利叔叔的钟 Uncle Henry's Clock

1776年的精神 Spirits of 1776

第四章 逻辑 Chapter 4 Logic aha!

狡猾的司机 The Crafty Cabbie

颜色的搭配 Color Mates

六则怪谜语 Six Sneaky Riddles

大盗贼 The Big Holdup

阿克博士的测验 Dr. Ach's Tests

阿克奖 The Ach Award

假日理发 Holiday Haircut

理发店的玩笑 Barbershop Bantor

太阳谷的谋杀者 Murder at Sun Valley

喷泉边的谋杀 Foul Play at the Fountain

第五章 过程 Chapter 5 Procedural aha!

十五的技巧 Fifteen Finesse

关于河马的难题 Hippo Hangup

分配家务 Dividing the Chores

杂技扒手 The Crooked Acrobat

飞机坠落于小岛 Island Crackup

懒惰的朋友 The Lazylover

外科医生 Sanitary Surgeons

第六章 文字游戏 Chapter 6 Word aha!

W. O. 沃德尔博士 Dr. W.O. Wordle

西·李·霍 Shee Lee Hoi

无从捉摸的“八”(EIGHT) Elusive Eight

世界上最小的纵横字谜 World's Smallest Crossword

玛丽·贝尔·拜伦 Mary Belle Byram

画谜 Picture Puzzles

滑稽的句子 Crazy Sentences

可笑的名字 Nosmo King

方卡片中的家谱 Square Family

酒馆的招牌 Tavern Tease

隐蔽的符号 Cryptic Symbols

镀金的模型飞机 Gold Tuitt

弗罗·斯特菲 Flo Stuvy

奇妙的字母序列 Curious Sequences

最后的话 Parting Words

Selected References

答案 Answers to Posed Problems

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书籍介绍

"aha! Gotcha" and "aha! Insight" are here combined as a single volume. The aha! books, as they are referred to by fans of the author Martin Gardner, contain 144 wonderful puzzles from the reigning king of recreational mathematics. In this combined volume, you will find puzzles ranging over geometry, logic, probability, statistics, number,time, combinatorics, and word play. Gardner calls these puzzles aha! problems. He explains that aha! problems "seem difficult, and indeed are difficult if you go about trying to solve them in traditional ways. But if you can free your mind from standard problem solving techniques, you may be receptive to an aha! reaction that leads immediately to a solution. Don't be discouraged if, at first, you have difficulty with these problems. Try your best to solve each one before you read the answer. After a while you will begin to catch the spirit of offbeat , nonlinear thinking, and you may be surprised to find your aha! ability improving." Studies show that persons who possess a high aha! ability are all intelligent to a moderate level, but beyond that level there seems to be no correlation between high intelligence and aha! thinking. So dig into some of the puzzles in this book, and prepare yourself for an aha! experience.