Foreword |
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xi | |
Introduction |
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xv | |
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EASY PUZZLES, EASY TEASERS |
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1 | (54) |
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3 | (2) |
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2 The Bottle and the Cork |
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5 | (2) |
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7 | (2) |
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9 | (2) |
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5 Which Tank Will Empty First? |
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11 | (2) |
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6 How Long Is the Line AB? |
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13 | (2) |
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15 | (2) |
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8 The Case of the Missing Dollar |
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17 | (2) |
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9 How Long Is the Side of the Inner Square? |
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19 | (2) |
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10 The Train Leaving and Returning to the Station |
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21 | (2) |
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11 The Height of the Stack of Paper |
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23 | (2) |
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25 | (2) |
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27 | (2) |
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29 | (2) |
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31 | (2) |
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33 | (2) |
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17 The Unlucky Storekeeper |
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35 | (2) |
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37 | (2) |
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39 | (2) |
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20 The Thief in the Store |
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41 | (2) |
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21 Counting Blonde Students |
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43 | (2) |
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22 The Cost of Shoeing a Horse |
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45 | (4) |
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49 | (2) |
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51 | (2) |
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53 | (2) |
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55 | (126) |
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57 | (2) |
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27 The Town Council Clock |
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59 | (2) |
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28 The Books on the Bookshelf |
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61 | (2) |
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29 The Black and White Marbles |
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63 | (2) |
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30 How Far Has the Fly Traveled? |
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65 | (2) |
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31 5 Loaves and 3 Gentlemen |
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67 | (2) |
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32 2 Red Queens and a Black Ace |
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69 | (2) |
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33 The Curious Transaction That Resulted in a Missing Dollar |
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71 | (2) |
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34 Counting the Number of Earrings |
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73 | (2) |
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75 | (2) |
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77 | (2) |
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79 | (4) |
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38 The 2 Bullets in a Revolver |
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83 | (2) |
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85 | (2) |
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40 How Many Ways Can the 20 Numbers on a Dartboard Be Arranged? |
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87 | (2) |
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41 The Tower of Hanoi Puzzle |
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89 | (4) |
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93 | (2) |
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43 The 5 Letters and Envelopes |
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95 | (2) |
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44 The Rate of Speed That Mary Swims |
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97 | (2) |
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99 | (2) |
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46 The 10 Stacks of Coins |
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101 | (2) |
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47 Signs along the Highway |
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103 | (2) |
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48 Choose 2 Good Eggs from 6 |
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105 | (2) |
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107 | (2) |
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50 Whom Should Johnny Play First? |
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109 | (4) |
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113 | (2) |
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52 The 2 Women Selling Apples |
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115 | (4) |
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119 | (4) |
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123 | (4) |
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55 The Problem of the Average Speed on the Round-Trip |
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127 | (2) |
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129 | (4) |
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57 The Boat and Its Cargo |
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133 | (2) |
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58 The Mutilated Checkerboard |
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135 | (4) |
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139 | (4) |
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60 The Deck of Cards Problem |
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143 | (2) |
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61 The Weight of the Potatoes |
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145 | (2) |
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62 Calculating the Width of a River |
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147 | (4) |
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63 The Green and Blue Cabs |
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151 | (2) |
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153 | (2) |
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155 | (2) |
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157 | (2) |
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159 | (2) |
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161 | (4) |
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69 The Second Child Puzzle |
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165 | (4) |
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169 | (2) |
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71 The 2 End Digits of 20 Numbers |
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171 | (2) |
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72 Lewis Carroll's Problem in Probability |
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173 | (2) |
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175 | (2) |
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177 | (2) |
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75 The Man Packing a Suitcase |
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179 | (2) |
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SLIGHTLY MORE CHALLENGING TEASERS |
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181 | (134) |
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76 The Links in the Gold Chain |
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183 | (4) |
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187 | (2) |
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189 | (2) |
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191 | (2) |
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80 The Fence-Post Problem |
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193 | (2) |
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195 | (2) |
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82 The Jeweler and the Chain |
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197 | (2) |
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199 | (2) |
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201 | (2) |
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203 | (2) |
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86 Mr. Simpson's Influence |
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205 | (4) |
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87 The Potential Employee |
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209 | (2) |
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211 | (2) |
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89 The Lady in the Jewelry Store |
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213 | (2) |
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90 Proving Dr. Krieger's Equation Cannot Hold |
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215 | (2) |
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91 The Problem Involving Percentages |
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217 | (2) |
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219 | (2) |
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221 | (2) |
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223 | (4) |
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95 The Distance to the Horizon |
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227 | (4) |
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96 Traversing 50 Miles of Track |
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231 | (2) |
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233 | (4) |
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237 | (4) |
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99 The Most Likely Position of the First Black Ace in a Shuffled Deck |
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241 | (2) |
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100 Gold and Silver Coins |
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243 | (2) |
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101 The Paradox of the Second Ace |
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245 | (4) |
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249 | (4) |
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253 | (2) |
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104 How Far Is It from Flag D to Flag A? |
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255 | (6) |
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261 | (4) |
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265 | (4) |
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269 | (4) |
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108 The Spot in a Rectangle |
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273 | (4) |
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109 How Should the Investment Be Divided? |
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277 | (2) |
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110 Square Fields and Fence Hurdles |
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279 | (4) |
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111 The Rope around the Earth |
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283 | (2) |
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112 The Rope in the Soccer Playing Field |
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285 | (2) |
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113 Which Scenario Should You Choose? |
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287 | (2) |
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114 What Is the Probability That You Will Get Your Assigned Seat? |
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289 | (2) |
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291 | (4) |
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295 | (4) |
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117 What Is the Largest Number That Can Be Expressed Using 3 Digits? |
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299 | (2) |
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301 | (2) |
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303 | (2) |
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120 The Hole through a Sphere |
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305 | (6) |
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121 The Ant on a Rubber Rope |
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311 | (4) |
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315 | (18) |
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317 | (4) |
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321 | (4) |
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325 | (8) |
Notes |
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333 | (4) |
Select Bibliography |
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337 | |