Who is the smartest person in the world and what is their IQ?

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Rooster Cogburn , Rooster Cogburn, answered

I searched and found this :

  1. Christopher Langan. For the actor and writer, see Chris Langham.Christopher Michael Langan (born c. 1952) is an American autodidact with an IQ reported to be between 195 and 210. He has been described as "the smartest man in America" as well as "the smartest man in the world" by the media.


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