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Who is the most intelligent person in the world?

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AwesomeHelperviz
For me, Albert Einstein is the most intelligent person.

But in IQ tests,
William James Sidis with an IQ of 250-300 has the highest. 
Dominiviz
Talking about the most intelligent person in the world? I guess theirs lots of them. I prefer those people who inherit a photographic memory are the ones who considered to be the most intelligent person in the world.

Hope it Helps =)
-----Domini-----