Vigesimal System/Examples/Welsh
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Example of Vigesimal System
The Welsh language shows the remnants of a vigesimal system in its names for certain numbers:
| \(\ds \) | \(20\) | \(\ds \) | ugain | |||||||||||
| \(\ds \) | \(30\) | \(\ds \) | deg ar ugain | \(\quad\) literally: ten and twenty | ||||||||||
| \(\ds \) | \(40\) | \(\ds \) | deugain | \(\quad\) literally: two twenties |
and so on.
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): number system
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): number system