fredweasley
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Just how smart are you? When John was six years old he hammered a nail into his favorite tree to mark his height. Ten years later at age sixteen, John returned to see how much higher the nail was. If the tree grew by five centimeters each year, how much higher would the nail be? ~Riddles.com

Just how smart are you? When John was six years old he hammered a nail into his favorit...
on June 26, 2014
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fredweasley
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on June 26, 2014
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