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- From: spacefox@acs.bu.edu (Godfrey Degamo)
- Newsgroups: sci.math,rec.org.mensa,rec.puzzles
- Subject: Problematic smurfs!
- Keywords: smurfs
- Message-ID: <94952@bu.edu>
- Date: 30 Aug 92 20:09:36 GMT
- Sender: news@bu.edu
- Followup-To: sci.math
- Organization: Boston University Undergraduate Mathematics
- Lines: 49
- Originator: spacefox@acs.bu.edu
-
-
- Help! My friend gave me this problem. Being quite lazy, I don't want to
- think about it. Anyways, we decided that this would be an interesting problem
- to put on the net. Anyways, if you decide to post anything about this problem,
- please put the word "smurfs" somewhere in the subject header and keyword
- category. We plan to record every post on it.
- Well, here goes, good luck!
-
-
- -------------------------------------------------------------------------------
- A group of 1000 smurfs wear either a red or blue hat on their head.
- They can only wear one color. The color hat on their head is known to all, but
- the wearer. The wearer of the hat has no means whatsoever for obtaining the
- color of his hat. It is never the case that all 1000 smurfs will wear
- the same color hat.
- One day the mayor, not apart of the 1000 smurfs, decides to call a
- town meeting. All 1000 smurfs are gathered into the town hall. The mayor
- is not wearing a hat. During the meeting, the mayor asks that all the
- smurfs wearing red hats to stand up.
- There is a bit of commotion in the crowd, but no one stands up.
- The mayor requests the same demand a bit more sternly.
- Again, commotion, but no one stands up.
- The mayor, irate, demands the red hatted smurfs to stand up.
- Then, a certain amount of smurfs rise.
-
- find:
- The exact amount of smurfs that rise.
- (Hint: This number will be greater than one.)
- The color of the hats of the smurfs that rise.
-
- more importantly,
- Explain how you deduced your answer.
- -------------------------------------------------------------------------------
-
- I hope that's clear enough for you. If not, post, but all the necessary
- information has been supplied. I'll only answer questions about my poor
- grammar and writing style. Put on your smurf hats and think!
-
-
- -G. Degamo,
- spacefox@acs.bu.edu
-
- PS: please, no Delft University students' input! ;)
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