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Another Holiday brain teaser
Message
From
28/12/1998 14:27:14
George Lee
Microcomputer Engineering Services, Llc
Huntington Beach, California, United States
 
General information
Forum:
Visual FoxPro
Category:
Other
Miscellaneous
Thread ID:
00170812
Message ID:
00170895
Views:
29
>>Ted said. "I'm Blue and they're both Red."
>>
>>Ned said "I'm ... " but the rest was blown away by a sudden gust of wind.
>>
>>Fred Said. "He said he's Blue. That's true. I'm Blue too."
>>
>>The captain frowned uncertainly and called on his trusty advisor < you > to determine which if any should be rescued.
>>
>>Of the three which one(s) do you tell him to rescue and why?
>>
>
>Assumption: EVERY complete sentence is True or False.
>
>Then, logically looking at the sentence construction:
>Ted [T and T = T] or [F and T = F] or [T and F = F] or [F and F = F]
>
>Ned unknown
>
>Fred All 3 sentences must be True or all 3 must be False because they are
> separate sentences, unlike Ted's sentence.
>
>If Fred is Blue, then Ned is Blue and Ted is Red. If Fred is red, then Ned is red and Ted is blue. For Ted the combination of F [I'm Blue] and T [They're both red] is not a possibility. Likewise for the T and F combination. You are left with:
>Ted [T and T = T] or [F and F = F]
>
>Ned unknown
>
>Fred [T and T and T] or [F and F and F] -- same as before
>The given is there is at least 1 Red and 1 Blue man. If you assume that Fred could not have heard Ned as well, then you pick up Ted. Otherwise, you would pick up both Ned and Fred.

Lets assume for a moment that Ned said either I'm Blue or I'm Red and not something unusual like I'm ... a hairy green gorilla. Don't assume there is at least one Red and 1 Blue man. We can also assume that Fred heard Ned but most importantly what color did Ned say he was. Once you have deduced that the rest falls into place.

Dan
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