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???
03/12/08 08:16
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 		 #152149 - I like that statistical idea
Responding to: ???'s previous message
I am pleased to see that Jan got the same answer as me.
most people worked out you can measure 30 minutes by simply lighting the first piece of string at both ends, and it will burn out in 30 minutes, the trick which most people don't get at first is to light one end of the second piece of string at the same time as you light the two ends of the first, so then when the first piece of string burns out the second still has 30 minutes left to burn, when the first goes out you light the second end of the second string which will then burn out after 15 minutes giving you 45 minutes.
The guy in the interview got the first part but then got stuck on the second, he still got the job though.

List of 30 messages in thread
TopicAuthorDate
Interesting interview problem            01/01/70 00:00      
   Will email do, too ?            01/01/70 00:00      
   Also, a question:            01/01/70 00:00      
      yep            01/01/70 00:00      
         E-mail is out.            01/01/70 00:00      
   Like a candle            01/01/70 00:00      
   Google            01/01/70 00:00      
      We need to conduct the interviews in a Faraday cag            01/01/70 00:00      
         Darn!            01/01/70 00:00      
            Didn't need Google but ...            01/01/70 00:00      
   Make statistics be your friend...            01/01/70 00:00      
      still need both strings            01/01/70 00:00      
   Do they burn in the same non-linear way?            01/01/70 00:00      
      an old proverb            01/01/70 00:00      
         Hint above            01/01/70 00:00      
         That's exactly why I asked...            01/01/70 00:00      
            you don't need this            01/01/70 00:00      
               I like that statistical idea            01/01/70 00:00      
                  not quite so...            01/01/70 00:00      
                     Brilliant.            01/01/70 00:00      
                  Needs statistical information, though.            01/01/70 00:00      
                     one of an interesting interview task could also...            01/01/70 00:00      
                        you would need to cut it            01/01/70 00:00      
                     Only, if you want...            01/01/70 00:00      
               You are right!            01/01/70 00:00      
               Another Method            01/01/70 00:00      
                  or your lighter runs dry :)            01/01/70 00:00      
               Wrong !            01/01/70 00:00      
                  Jan is right            01/01/70 00:00      
                  Jan is right...            01/01/70 00:00      

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