Price of cake : and 99 other classic mathematical riddles

1. A Lazy Blacksmith 2. Bumper Ants 3. The Price of Cake 4. The Ketchup Fry 5. Going Around in Circles 6. The Soft-Boiled Egg 7. A Pill Mix-up 8. A Hurried Student 9. Going Upstream 10. Boys and Girls 11. Café au Lait 12. Lait au Café 13. Guardians of the Gates 14. A Kangaroo on a Staircase 15. The Fluttering Fly 16. An Hour Early 17. How to Cut Up a Cube 18. Racing to a Hundred 19. Fresh Paint! 20. The Worldly Cocktail Party 21. Same Time and Place 22. Taking It a Coin Too Far 23. The Birthday Paradox 24. Fifteen Serpents 25. A Screening Test 26. Shocking Sports Statistics 27. Free Throws 28. The Number Across the Street 29. The Unstable Painting 30. The Unfaithful Spouses 31. A Few Surprising Probabilities 32. The Monty Hall Problem 33. Square Jigsaws 34. The Good, the Bad, and the Ugly 35. The Gas Shortage 36. An Impossible Prediction 37. With Three Weighings 38. Heads or Tails in the Dark 39. The Principal and the Hats 40. The Fort 41. Exact Opposites 42. Hilbert's Hotel 43. A Chaotic Boarding 44. Mutineer Pirates 45. The Monkey Race 46. Dwarf Thieves 47. Eight Triangles to a Square 48. How to Tile One's Bathroom 49. One More Coin 50. A New Variant of Heads or Tails 51. The Little Brother's Revenge 52. Unbreakable Plates 53. The Cable Around the Earth 54. The Spaghetti 55. Swimming Pool Lockers 56. Met at a Party 57. The Rats and the Bottles 58. The Collection of Cards 59. The Saint Petersburg Paradox 60. The Chocolate Bar 61. Tic-Tac-Toe 62. Ant vs. Car 63. The Squirrel and the Nuts 64. The Triangular Cake 65. A Fair Share 66. The Lonely Soldier 67. The Booty of the Thirteen Pirates 68. Reference Weights 69. The Elephant and the Bananas 70. The Very Hungry Termite 71. The Principal and the Lightbulb 72. The Principal and the Drawers 73. The Principal and the Seven Hats 74. The Principal and the T-Shirts 75. Die Hard 76. The Rats and the Bottles (2) 77. Where Is the Robot? 78. The Seven Bridges of Königsberg 79. Linking the Edges 80. A Magic Trick 81. How to Tile One's Bathroom (2) 82. How to Tile One's Bathroom (3) 83. The Mad Postman 84. Mind the Dog! 85. The Two Envelopes 86. The Two Envelopes (2) 87. The Squirrel and the Nuts (2) 88. The Monkey with a Typewriter 89. A Rectangle with Integer Sides 90. Finding the Right Wire 91. Making Friends 92. Red or Black? 93. Finding the Cable 94. Lukewarm Earnings 95. Not Your Usual Game of Chess 96. The Principal and the Real Hats 97. The Principal and the Hats (2) 98. One Last Riddle with the Principal 99. The Lax Captain 100. Peg Solitaire

This book is a novel collection of 100 entertaining math puzzles, many of them original, with hints, copious illustrations, varying degrees of difficulty, and connections to formal math concepts.