Indefinite pronouns are words like a few, some, several, any, most, other, some, each, everything, none, neither and either. Indefinite pronouns are always singular. The pronoun or verb which refers to the indefinite pronoun should also be in the singular.
Something on my computer is making it slow.
Each scientific invention was presented by its inventor.
None shall pass!
Does anybody know anyone who knows anything about what’s going on?
One is the only indefinite personal pronoun. It’s a good one to use in formal writing where you would usually use I or you.
One might have a hard time understanding business jargon. (formal)
You might have a hard time understanding business jargon. (informal)
The table was arranged in such a way that it would be easy for one to quickly gather information.
To ensure a space is available, one must make reservations 24 hours in advance.