Why is “personne” plural

Question

Why is personne considered a plural noun? I thought it needed an “s” to be plural.

Accepted Answer

Hi Barbara, 
I have had a look at the Kwiz and it asks you which of the following nouns are plural?  -
oranges/personne/filles/garçon
The only plural nouns are -
oranges and filles 
as 'personne',  as you say would have a -s at the end to mean 'people'.
If you were marked wrong maybe there is another reason for this as it definitely not plural.
Bonne Continuation!

Answer

Personne as a noun does indeed take an 's' in the plural; as an indefinite pronoun it is invariable and 'singular'.https://dictionnaire.lerobert.com/definition/personne