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victor 2007-06-04 15:23

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 :)

axn 2007-06-04 16:26

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

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