Only two backbones, but a thousand ribs.
What is it?
I'm posting one puzzle, riddle, math, or statistical problem a day. Try to answer each one and post your answers in the comments section. I'll post the answer the next day. Even if you have the same answer as someone else, feel free to put up your answer, too!
Wednesday, September 03, 2008
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Railroad tracks.
ReplyDeleteNow that I think about it, I think I posted this one before...