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Pop. of Ethiopia (108.4million) is 5 x Pop. of Beijing, China (21.52 million people)
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Mass of deck of Bicycle playing cards (96 g)
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.