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​241 Real-world Brain Teasers.
Guided problem-solving in Inventions, Nature, Uncommon Trivia, and Business Innovation.​
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Audiobook: US | UK

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    Unique Problem Solving Experience

    241 engaging problems across 13 fascinating topics including Ingenious Inventions, Business Innovations, Nature & Science, Historical Happenings, Folk Wisdom from different cultures around the world, and many more.

    Smart Navigation

    Specially designed easy-to-navigate format that eliminates the need to flip back and forth between sections, helping you keep the fun going and avoid accidentally stumbling upon answers.

    Now available as Audiobook: US | UK

    Family Friendly and Educative

    Answers that go beyond fun facts, giving you a bit more insight into how the world works and what makes people tick. Family-friendly puzzles that anyone and everyone can brainstorm and enjoy, regardless of age, education, or background.

    Also, see: Bonus​

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