Personally, I am really impressed with the sense of humor of these cannibals. In a message dated 8/17/2008 6:22:40 P.M. Pacific Daylight Time, jabrown@xxxxxxxxx writes: 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 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: 270.6.0/1603 - Release Date: >>> 8/10/2008 >>> 6:13 PM >>> >> >> 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. >> >> > > > -- > Chela > E-Mail: cdrobles693@xxxxxxxxx > WindowsLiveMessenger Only (PLEASE E-Mail ME BEFORE ADDING ME TO YOUR > CONTACTS!): cdrobles693@xxxxxxxxxxx > > Blog: http://www.1jtcdr.wordpress.com > Facebook: http://www.facebook.com/profile.php?id=690550695 (PLEASE > E-MAIL ME BEFORE I EITHER ADD OR REJECT YOUR FACEBOOK REQUESTS!) > MySpace: http://www.myspace.com/chelarobles (AGAIN, PLEASE E-MAIL ME > BEFORE YOUR REQUEST IS IETHER REJECTED OR ACCEPTED!) > Skype: jazzytrumpet (E-Mail ME ABOUT ADDING YOU ONTO 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 > > 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. **************Looking for a car that's sporty, fun and fits in your budget? Read reviews on AOL Autos. (http://autos.aol.com/cars-Volkswagen-Jetta-2009/expert-review?ncid=aolaut00030000000007 )