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  6. What Does the Earth Sound Like?: 159 Astounding Science Quizzes Eva Everything
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  10. The 125 Best Brain Teasers of All Time: A Mind-Blowing Challenge of Math, Logic, and Wordplay Marcel Danesi
  11. Ultimate Trivia, Volume 2: 840 More Fun and Challenging Trivia Questions Donna Hoke
  12. Brain Teasers for Adults: 75 Large Print Puzzles, Riddles, and Games to Keep You on Your Toes! Marcel Danesi
  13. Useless Science Facts That Will Lull You to Sleep Fast Sleeping Facts
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  16. Useless Facts That Will Bore You to Sleep Fast Calmy Heart
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  18. Useless Sleep Trivia That Will Make You Sleep Fast Calmy Heart
  19. New England Patriots - The Ultimate Curious Facts Collection: 100 Fun And Interesting Bits Of Information Curious Facts Station
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  21. Trivia That Make You Sleep Fast Meditative Sleep
  22. Useless Facts About Life That Will Put You to Sleep: Better Than White Noise Meditative Sleep
  23. Brain Training: Train Your Memory To New Abilities, Improve Your Memory, Focus And Self-confidence Cameron Dawson
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  24. One Piece - The Ultimate Trivia And Curious Facts Collection Trivia Hub
  25. Pokemon - The Ultimate Trivia And Curious Facts Collection Trivia Hub
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  27. Dexter's Laboratory - The Ultimate Trivia And Curious Facts Collection Trivia Hub
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  30. Attack On Titan - The Ultimate Trivia And Curious Facts Collection Trivia Hub
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  36. 182 Riddles and Jokes for Kids: Jokes and Riddles to Brighten Every Kid's Day Marjorie Hawkins
  37. Brain Training: The Basics of Brain Training and Mental Toughness Albert Sirones
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  38. Naming Your Little All-Star: Baby Names from the World's Greatest Athletes Scott Rubin
  39. The Compound Noun Treasure Hunt: A Picture Book about Compound Words Kimberlee Gard
  40. Brain Training Mastery : Train Your Memory to New Abilities with accelerated Learning, Improve Your Memory, Focus, And Self-Confidence Richard Mitchell
  41. Brain Training And Mental Toughness Mastery: Train Your Brain And Memory To New Abilities. Learn How To Read And Analyze People With Mind Control And NLP Matthew Montors
  42. Brain Training Photographic Memory: Train your memory to new abilities, improve your memory, focus, and self-confidenc, Steps To Remember Anything Faster! Luke Basilicat
  43. Women of Interest: The Ultimate Book of Women's Trivia Alicia Alvrez
  44. Brain Training Vol. I: How To Train Your Brain To See You’re Stronger, Better And More Capable Than You Think Jason M. Kirst
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  46. Boost Your Memory and Focus Like a Modern Einstein Accelerate Learning Speed, Embrace Unlimited Memory Potential with State-of-the-Art Techniques and Transform Your Brain into a Powerful Machine Roger C. Brink
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