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So there was a spaceship sent back with the following picture that assumed to constitute an addition. What is the base of the number system?

   # *    # * _________  # ^ # 

How would I find this out...? I have no clue how to approach this!

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    See this question: http://math.stackexchange.com/questions/47750/puzzle-box-box-box-bigstar-box :)2012-02-07

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