Interested in Language
I need a hint about less.
I have many friends. - He has more friends.
I have less friends. - He has ? friends.
Furthermore I'm not 100% sure if the first less is correct.
What about I have a few friends?
I would suggest you also consider the word "fewer" as a possibility for friends.
I have few friends. - He has fewer friends.
should be fully okay.
And also It happens to numbers (which are) fewer than 5. should be okay.
No, with the number, use less.
Round down if the last digit is less than 5. Round up if it's 5 or greater/higher.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.
Less is lovely for sugar and cream, but for discrete individuals, I'd say fewer sounds more correct.