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He provided several references with the origin of the problem via Twitter. Benjamin believes such problems are relatively well-known to math education researchers. in Mathematics Education from Columbia University. I learned of the real story thanks to Benjamin Dickman, a Ph.D. No one in the media, myself included, reported on the actual history of the problem. Remarkably the question has a long history dating back nearly 40 years to France! In fact, the question is not Chinese at all. The Chinese school district reportedly defended the question was open-ended and meant to encourage critical thinking. All that from the walking stick’s inscription and physical appearance. Sherlock Holmes remarkably deduces the man is under 30, a family doctor, and the owner of dog.

For example, in The Hound of the Baskervilles, Sherlock Holmes faces the following question: a man leaves behind a walking stick. If the setup was part of a Sherlock Holmes story, we would actually enjoy the kinds of leaps in logic to deduce an answer.
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The minimum age for getting a boat’s license is 23, so at least 28.”īut perhaps the question was better suited for a detective story. “In China, if you’re driving a ship that has more than 5,000kg of cargo you need to have possessed a boat license for five years.

“The total weight of 26 sheep and 10 goat is 7,700kg, based on the average weight of each animal,” said one Weibo commenter. Can we deduce the captain’s age from his cargo? In fact we can make some conclusions!Ī Weibo user was quoted in a BBC news article with the following answer: The media covered focused on solving the problem.
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MindYourDecisions now has over 1,000 free articles with no ads thanks to community support! Help out and get early access to posts with a pledge on Patreon. "All will be well if you use your mind for your decisions, and mind only your decisions." Since 2007, I have devoted my life to sharing the joy of game theory and mathematics. The REAL Answer To The Viral Chinese Math Problem “How Old Is The Captain?” Stumping The Internet Even I covered the problem, but there is more to the story than anyone has reported so far! Let me go over the question before I get to that part. The question baffled students and parents, garnering headlines around the world. “If a ship had 26 sheep and 10 goats onboard, how old is the ship’s captain?” (rated 4.2/5 stars on 22 reviews) Kindle UnlimitedĪ 5th grade math exam in China had the following question (translated to English): Math Puzzles Volume 3 is the third in the series.

Math Puzzles Volume 2 is a sequel book with more great problems. Volume 1 is rated 4.4/5 stars on 87 reviews. Math Puzzles Volume 1 features classic brain teasers and riddles with complete solutions for problems in counting, geometry, probability, and game theory. The puzzles topics include the mathematical subjects including geometry, probability, logic, and game theory. Mind Your Puzzles is a collection of the three “Math Puzzles” books, volumes 1, 2, and 3. Multiply Numbers By Drawing Lines This book is a reference guide for my video that has over 1 million views on a geometric method to multiply numbers. The Best Mental Math Tricks teaches how you can look like a math genius by solving problems in your head (rated 4.2/5 stars on 76 reviews)
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The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias is a handbook that explains the many ways we are biased about decision-making and offers techniques to make smart decisions. (rated 4.2/5 stars on 224 reviews)Ĥ0 Paradoxes in Logic, Probability, and Game Theory contains thought-provoking and counter-intuitive results. The Joy of Game Theory shows how you can use math to out-think your competition. (3) The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias (2) 40 Paradoxes in Logic, Probability, and Game Theory (1) The Joy of Game Theory: An Introduction to Strategic Thinking Mind Your Decisions is a compilation of 5 books: As an Amazon Associate I earn from qualifying purchases. If you purchase through these links, I may be compensated for purchases made on Amazon.
