20/Historical Note

Historical Note on $20$ (Twenty)

Occurrences of the number $20$ in various cultures in history:

There were $20$ shillings in $1$ pound Sterling in pre-decimal British coinage.
There are $20$ fluid ounces in the imperial pint.


The word score means a set of $20$.


Also see

  • Definition:Vigesimal System


Sources

  • 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $20$
  • 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $20$
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