What is the actual purpose of the Olympic rings. Isn’t the purpose of the rings to tell everyone that anyone is welcome to join and play from any part of the world.
Five rings = the five continents in the world.
http://www.olympics.mu/meaning-olympic-rings.html
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Yes, you're right.
Originally, the five rings represented the five inhabited continents (Europe, Asia, Australia, Africa, and the Americas). This site has some interesting information.
http://en.wikipedia.org/wiki/Olympic_symbols