1. Sprouts and Brussels Sprouts
   Answers on page 10

2. Penny Puzzles
   Answers on page 22

3. Aleph-null and Aleph-one
   Answers on page 39

4. Hypercubes
   Answers on page 53

5. Magic Stars and Polyhedrons
   Answers on page 63

6. Calculating Prodigies

7. Tricks of Lightning Calculators
   Answers on page 87

8. The Art of M.C.Escher
   Answers on page 102

9. The Red-Faced Cube and Other Problems
   Answers on page 111

10. Card Shuffles
    Answers on page 136

11. Mrs. Perkins' Quilt and Other Square-Packing Problems
    Answers on page 147

12. The Numerology of Dr. Fliess
    Answers on page 160

13. Random Numbers
    Answers on page 171

14. The Rising Hourglass and Other Physics Puzzles
    Answers on page 184

15. Pascal's Triangle
    Answers on page 204

16. Jam, Hot and Other Games
    Answers on page 223

17. Cooks and Quibble-Cooks
    Answers on page 236

18. Piet Hein's Superellipse

19. How to Trisect an Angle

Bibliography

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