I get that plusieur represents a greater quantity than quelqu'un, but I'm struggling with the exercises because I can't keep track of whether they expect a few to represent a greater quantity than several or vice versa.
At least in the English I speak, the difference between these two words is subtle and comes down to feeling more than quantity.
Is there some other way to structure the exercises that doesn't rely on making novel (or at least regional) distinctions in English?