Letters of Names of Numbers in Alphabetical Order
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Theorem
English
When written in English, the only integer the letters of whose name appear in alphabetical order is:
- $40$: forty
French
When written in French, the only integers the letters of whose name appear in alphabetical order are:
| \(\ds 2:\) | \(\) | \(\ds \) | deux | |||||||||||
| \(\ds 5:\) | \(\) | \(\ds \) | cinq | |||||||||||
| \(\ds 10:\) | \(\) | \(\ds \) | dix | |||||||||||
| \(\ds 100:\) | \(\) | \(\ds \) | cent |