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Pop. of Tokyo, Japan (13.3 million people) is 4 x Pop. of Hefei, China (3.35 million people)
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Land Area of United States (2010) (9.83 km^2)
If this was a standard unit ...
Yes, there's now a book based on these numbers. Oxford University Press: July 2018.
Click here to learn more about it.
Click here for Podcast: Andrew Elliott interviewed for New Books Network.