FrancophonIA/Vikidia-EnFr huggingface dataset:
One (1) is a natural number after zero and before two.
It represents a single item.
A human typically has one head, nose, mouth, and navel (belly-button).
The Roman numeral for one is I.

In mathematics, 1 is also the only number for which these special facts are true.

In mathematics 0.999... is a repeating decimal that is mathematically equal to 1. Many proofs have been made to show this is correct.

The number one is important for computer science because the binary numeral system uses only 1s and 0s. In machine code, and in many programming languages, one means true and zero means false.