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Common Answers

Have you entered September's Common Answers?

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Puzzle - Hint

When James was nine years old he hammered a nail into a tree to mark his height.

Ten years later, James returned to see how much higher the nail was.

If the tree grew by four inches each year, how much higher would the nail be?

 [Ref: ZRZB]

Hint: Think how the nail will move.

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