Four friends claim they have been wrongly imprisoned. They are not criminals but mere harmless logicians! The warden says, “If you are in fact logicians I will set you free. But first you have to prove it to me.“ Can they work it out?
I have seen this puzzle shared in many places. I based my graphic on a widely circulated graphic but I have been unable to determine the original source–if you know it please let me know. The links below are examples of how the puzzle has been shared.
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If you purchase through these links, I may be compensated for purchases made on Amazon. As an Amazon Associate I earn from qualifying purchases. This does not affect the price you pay.
Book ratings are from January 2023.
My Books (worldwide links)
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Mind Your Decisions: Five Book Compilation
A collection of 5 books:
“The Joy of Game Theory“ rated 4.3/5 stars on 290 reviews
“The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias“ rated 4.1/5 stars on 33 reviews
“40 Paradoxes in Logic, Probability, and Game Theory“ rated 4.2/5 stars on 54 reviews
“The Best Mental Math Tricks“ rated 4.3/5 stars on 116 reviews
“Multiply Numbers By Drawing Lines“ rated 4.4/5 stars on 37 reviews
Mind Your Puzzles: Collection Of Volumes 1 To 3
A collection of 3 books:
“Math Puzzles Volume 1“ rated 4.4/5 stars on 112 reviews
“Math Puzzles Volume 2“ rated 4.2/5 stars on 33 reviews
“Math Puzzles Volume 3“ rated 4.2/5 stars on 29 reviews
2017 Shorty Awards Nominee. Mind Your Decisions was nominated in the STEM category (Science, Technology, Engineering, and Math) along with eventual winner Bill Nye; finalists Adam Savage, Dr. Sandra Lee, Simone Giertz, Tim Peake, Unbox Therapy; and other nominees Elon Musk, Gizmoslip, Hope Jahren, Life Noggin, and Nerdwriter.
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