alleryThe French word quatre-vingt for 80 is built on which idea?
AEight tens
BTwo forties
CSixteen fives
DFour twenties
Answer & Solution
Correct answer: D. Four twenties
1. Quatre-vingt literally means four-twenty.
2. The word vingt means twenty, so the form uses a base of 20.
3. Eight tens would be the plain decimal reading, which it is not.
_Source: Wikipedia, Ethnomathematics, section French_
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