read through this, interesting i say 
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but this one -- "1.没有一张纸可对折超过9次" ... ...5.39.217.76( S/ b0 G! L, A! U
; h8 d$ g. S% e9 q% B& x5.39.217.76correct me if i'm wrong: i think i've heard that "... not to be able to fold up more than 6 times" ... ... ... ...
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and i've tired... really, it's hard as hell, or, should i say, impossible to fold the 7th times ?!
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2 [3 V! w1 P( s" r( nanyway, thanks for sharing this interesting topic to us all  |