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- From: rbarnick@mitre.org (Barnie Barnick)
- Subject: Re: Lost solution
- Message-ID: <rbarnick-241292103910@cosadpm12.mitre.org>
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- Organization: MITRE
- References: <1992Dec22.193053.24084@bernina.ethz.ch>
- Date: Thu, 24 Dec 1992 17:42:34 GMT
- Lines: 36
-
- *****
- Tim,
- The answer is 4 and 19.
- *****
-
- In article <1992Dec22.193053.24084@bernina.ethz.ch>, timh@igc.ethz.ch (Tim
- Harvey) wrote:
- >
- > Dear Netters,
- > A log while ago I collected the following brainteaser;
- >
- > ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- >
- >
- > Mr. S. and Mr. P. are both perfect logicians, being able to correctly deduce
- > any truth from any set of axioms. Two integers (not necessarily unique) are
- > somehow chosen such that each is greater than 1 and less than 100. Mr. S.
- > is given the sum of these two integers; Mr. P. is given the product of these
- > two integers. After receiving these numbers, the two logicians do not
- > have any communication at all except the following dialogue:
- > Mr. P.: I do not know the two numbers.
- > Mr. S.: I knew that you didn't know the two numbers; I do not know the
- > two numbers.
- > Mr. P.: Now I know the two numbers.
- > Mr. S.: Now I know the two numbers.
- > "The two numbers" in this dialogue refers to those two integers that were
- > mysteriously chosen.
- >
- > Given that the above statements are absolutely truthful, what are the two
- > numbers?
- > ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- > Anyway (and I hope it's not a FAQ) I didn't save the solution!
- >
- > Can anyone supply a definitive answer? (Then we can all get back to work)
- > Many thanks,
- > Tim
-