A piece of rope walks into a bar, and the bartender
says, “We don’t serve your kind.” The rope goes outside, ties
himself in a knot and frays one end of himself. He walks back into the
bar and the bartender says, “Weren’t you just in here?” The rope
replies, “No, I’m a frayed knot.”
answer:
Twice as long as from its middle to the end.
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