241 Real-World Brain Teasers: Guided Problem-Solving in Inventions, Nature, Uncommon Trivia, and Business Innovation.: Invent and DiscoverEbook241 Real-World Brain Teasers: Guided Problem-Solving in Inventions, Nature, Uncommon Trivia, and Business Innovation.: Invent and DiscoverbyInvent and DiscoverRating: 5 out of 5 stars5/5Save 241 Real-World Brain Teasers: Guided Problem-Solving in Inventions, Nature, Uncommon Trivia, and Business Innovation.: Invent and Discover for later