Google was originally called BackRub.
Why it is true
Google was originally called BackRub, a research project by Larry Page and Sergey Brin at Stanford University in 1996. The name Google was adopted in 1997, inspired by the word googol, which means 10 to the power of 100.
Source: Google
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This is the reading side of the site, so the answer is in the sentence above — that is the whole point of it. Test yourself works the other way round: the question comes on its own, and the fact and the explanation only appear once you have answered.