Are there more people with genius IQs living in china then there are people of any kind living in the U.S.?

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This is a claim made by the character of Mark Zuckerburg in the opening scene of the movie "The Social Network." I was immediately suspicious of the claim, but perhaps someone can show me where I'm wrong.

A.) There are an estimated 1,335,087,599 people living in china currently. (http://www.geohive.com/)

B.) A genius IQ is a debated threshold, but even liberal estimates put it at 140. An IQ of 140 is about 1/261 people. (http://en.wikipedia.org/wiki/Genius#IQ_tests) (http://wilderdom.com/intelligence/IQWhatScoresMean.html)

C.) so take the 1,335,087,599 people in china and divide it by 261 to get the number of people with a genius IQ, which equals about 5,115,279.

D.) There are about 312,516,602 people living in the United States. (http://www.geohive.com/)

C.) 312,516,692 > 5,115,279.........doesn't seem to work.

D.) In order for it to "work", 1 in every 4 people would need to be a "genius."

The only "unknown" is if 1 per 261 people in China has a genius IQ or if this number is greater....but it seems unlikely that this would be 1 in every 4.
I agree with you.

As you say, there are about 4 times as many people in China as there are in the US, so you'd need about 1 in 4 Chinese people to be considered a "genius" which is obviously not going to be true.
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