20/Historical Note
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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
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $20$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $20$