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Outline Mathematics
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Again, Abu, Ibn, and Hasib were on trial and it was known that one and only one of them was guilty. Abu claimed to be innocent; Ibn agreed that Abu was innocent; and Hasib claimed that he himself was the guilty one. As it turned out, the guilty one lied. Which one was guilty? |
Copyright © 1996-2010 Alexander Bogomolny
Solution
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Again, Abu, Ibn, and Hasib were on trial and it was known that one and only one of them was guilty. Abu claimed to be innocent; Ibn agreed that Abu was innocent; and Hasib claimed that he himself was the guilty one. As it turned out, the guilty one lied. Which one was guilty? |
(In the applet below, click on the underlined omitted expressions. See what happens.)
Do not forget to check your solution.
References
- R. Smullyan, The Riddle of Scheherazade, Alfred A. Knopf, 1997
Copyright © 1996-2010 Alexander Bogomolny
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