Saturday 9 November 2013

Tree Height Puzzle

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#154

Shaun was six years old when he marked a nail into his favorite palm tree to mark his height. 
Ten years later at age sixteen, Shaun returned to see how much higher the nail was. 
If the tree grew by 7 cms each year, how much higher would the nail be?

  Difficulty Level - 3/5

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  Solution : 

   It depends on which part of the tree the nail is marked. 
   If the nail is marked at the bottom of the tree, then it will be at the same place/height because tree grows from the top. Otherwise, you can't predict.
  

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