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

3748 Posts
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's Avatar
Jun 2003

143D16 Posts

[URL=""]Similar problem[/URL] with similar solution
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