Re: logic question

Article View: sci.logic

Article #739

#739

From: Stephen Montgomery-Smith
Date: Thu, 07 Jul 2005 04:29

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WARREN GREENWALD wrote:
> An instructor teaches a class five days a week, Monday through Friday. He
> tells
> his class that he will give one more quiz on one day during the final week
> of classes, but that the students will not know for sure the quiz will be
> that day
> until they come to the classroom. What is the last day of the week he can
> give
> the quiz to satisify these conditions?

So the students figure out that the test can never happen, and they 
don't study.

On Thursday the instructor comes in and gives them a quiz.  They are all 
taken completely by surprize, and hence his condition is satisfied.

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From: Stephen Montgomery-Smith <stephen@math.missouri.edu>
Organization: University of Missouri
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