# [bksvol-discuss] Re: Logic Puzzles, Brain Teasers, and Riddles

• From: Cindy <popularplace@xxxxxxxxx>
• To: bksvol-discuss@xxxxxxxxxxxxx
• Date: Sun, 17 Aug 2008 18:35:00 -0700 (PDT)

```Jake's given you the solution--only I'll one one little thing. There's a
pause... when neither of the other two answered and said what color his hat
was, then the third man knew and answered.

Cindy

--- On Sun, 8/17/08, Jake Brownell <jabrown@xxxxxxxxx> wrote:

> From: Jake Brownell <jabrown@xxxxxxxxx>
> Subject: [bksvol-discuss] Re: Logic Puzzles, Brain Teasers, and Riddles
> To: bksvol-discuss@xxxxxxxxxxxxx
> Date: Sunday, August 17, 2008, 6:19 PM
> I'll give this a stab.
>
> Let's call the shortest man 1, the middle man 2 and the
> tall man 3.
>
> We know that #1 and #2 are not both wearing white hats,
> because if they were
> then #3 must be wearing a black hat and #3 would know it
> (because there are
> only 2 white hats).
>
> It then follows that #1 and #2 must be wearing some
> combination of:
> #1 white and #2 black
> #1 black and #2 white
> #1 black and #2 black
>
> If #2 knows that #1's hat is white, then #2 knows that
> his own hat must be
> black, because otherwise it would have been white and #3
> would have known
> the color of his hat.
> Since #2 didn't know the color of his hat this
> alternative isn't possible.
>
> Since the remaining alternatives both have #1 with a black
> hat, we now know
> the reasoning and the color.
>
> Cheers,
> Jake
> ----- Original Message -----
> From: "Chela Robles"
> <cdrobles693@xxxxxxxxx>
> To: <bksvol-discuss@xxxxxxxxxxxxx>
> Sent: Sunday, August 17, 2008 8:04 PM
> Subject: [bksvol-discuss] Re: Logic Puzzles, Brain Teasers,
> and Riddles
>
>
> > Hello all, I know I'm behind the times with email
> but I'm trying to
> > catch up, now that I have stable internet connection,
> I have a puzzle
> > for you all to solve, that is, if any of you can solve
> it, my sister,
> > Brittnee, is a senior in high school taking algebra 2,
> and wanted me
> > to help her with this puzzle, however I'm stumped,
> and this has been a
> > very interesting 24 hours minus sleep time and church,
> to think of how
> > to solve it, so here it goes.
> > Black And White Hats
> > Cannibals ambush a safari in the jungle and capture
> three men. The
> > cannibals give the men a single chance to escape
> uneaten.
> >
> > The captives are lined up in order of height, and are
> tied to stakes.
> > The man in the rear can see the backs of his two
> friends, the man in
> > the middle can see the back the man in front, and the
> man in front
> > cannot see anyone. The cannibals show the men five
> hats. Three of the
> > hats are black and two of the hats are white.
> >
> > Blindfolds are then placed over each man's eyes
> and a hat is placed on
> > each man's head. The two hats left over are
> hidden. The blindfolds are
> > then removed and it is said to the men that if one of
> them can guess
> > what color hat he is wearing they can all leave
> unharmed.
> >
> > The man in the rear who can see both of his
> friends' hats but not his
> > own says, "I don't know". The middle man
> who can see the hat of the
> > man in front, but not his own says, "I don't
> know". The front man who
> > cannot see ANYBODY'S hat says "I know!"
> >
> > How did he know the color of his hat and what color
> was it?
> >
> >
> > On 8/12/08, Bob <rwiley@xxxxxxxxxxxxx> wrote:
> >> Hi Jim. The only book I can think of is "are
> you smarter than a fifth
> >> grader?" that is in the collection.
> >>
> >> However, you can check out
> >> http://www.braingle.com./
> >> This is a site with all sorts of brain teasers and
> puzzles.
> >>
> >> I especially like the fractured phrases section.
> It presents garbled
> >> phrases
> >> that, once straightened out, are well known
> sayings. I used to use this
> >> when
> >> teaching folks to cut and paste on the computer.
> It made a boring subject
> >> more tolerable.
> >>
> >> Check it out.
> >>
> >> Bob
> >> ----- Original Message -----
> >> From: <james.homme@xxxxxxxxxxxx>
> >> To: <bksvol-discuss@xxxxxxxxxxxxx>
> >> Sent: Tuesday, August 12, 2008 6:52 AM
> >> Subject: [bksvol-discuss] Logic Puzzles, Brain
> Teasers, and Riddles
> >>
> >>
> >>>
> >>> Hi,
> >>> A couple of years ago now, my best friend
> passed away. His little girl
> >>> really likes this sort of thing. Do we have
> any books in the collection
> >>> with this kind of stuff, or fun facts or
> trivia that might interest
> >>> people
> >>> who are somewhere around nine years old?
> I'd like to read it and have
> >>> fun
> >>> with her when I see her. She is so quiet. I
> never know what she's
> >>> thinking,
> >>> and I'd like to help her if she needs it.
> >>>
> >>> Thanks.
> >>>
> >>> Jim
> >>>
> >>> James D Homme, Usability Engineering, Highmark
> Inc.,
> >>> james.homme@xxxxxxxxxxxx, 412-544-1810
> >>>
> >>> "The difference between those who get
> what they wish for and those who
> >>> don't is action. Therefore, every action
> you take is a complete
> >>> success,regardless of the results." --
> Jerrold Mundis
> >>> Highmark internal only: For usability and
> accessibility:
> >>>
> http://highwire.highmark.com/sites/iwov/hwt093/
> >>>
> >>> To unsubscribe from this list send a blank
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> >>> bksvol-discuss-request@xxxxxxxxxxxxx
> >>> put the word 'unsubscribe' by itself
> in the subject line.  To get a list
> >>> of available commands, put the word
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> >>> line.
> >>>
> >>>
> >>>
> >>>
> >>> --
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> >>> Checked by AVG.
> >>> Version: 7.5.524 / Virus Database:
> 270.6.0/1603 - Release Date:
> >>> 8/10/2008
> >>> 6:13 PM
> >>>
> >>
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> >>
> >>
> >
> >
> > --
> > Chela
> > E-Mail: cdrobles693@xxxxxxxxx
> > WindowsLiveMessenger Only (PLEASE E-Mail ME BEFORE
> > CONTACTS!): cdrobles693@xxxxxxxxxxx
> >
> > Blog: http://www.1jtcdr.wordpress.com
> REQUESTS!)
> > MySpace: http://www.myspace.com/chelarobles (AGAIN,
> > BEFORE YOUR REQUEST IS IETHER REJECTED OR ACCEPTED!)
> MY SKYPE CONTACTS
> > BEFORE I GIVE A CONFIRMATION Of YES OR NO!)
> > Mobile Phone: (925) 250-5955 (ONLY FOR THOSE WHO WORK
> WITH ME, OR WHO KNOW
> > ME)
> > To unsubscribe from this list send a blank Email to
> > bksvol-discuss-request@xxxxxxxxxxxxx
> > put the word 'unsubscribe' by itself in the
> subject line.  To get a list
> > of available commands, put the word 'help' by
> itself in the subject line.
> >
> >
> >
> > --
> > No virus found in this incoming message.
> > Checked by AVG.
> > Version: 7.5.524 / Virus Database: 270.6.4/1616 -
> Release Date: 8/16/2008
> > 5:12 PM
> >
> >
>
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```