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Old 2007-06-04, 15:23   #1
victor
 
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Oct 2005
Fribourg, Switzerlan

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Default Weight of boxes

I got a stack of 25 boxes. Each box has a weight.
I noticed the following property : when I remove one box (whichever I choose) of the stack, I can split the stack in 3 same weighted stacks of 8 boxes.

Prove that all boxes have the same weight.

ps : This is no homework. Just an interresting problem I found on the net :)
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Old 2007-06-04, 16:26   #2
axn
 
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Jun 2003

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[URL="http://www.mersenneforum.org/showthread.php?t=7725"]Similar problem[/URL] with similar solution
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