@Sconibulus The plural of "person" is "people". The plural of "people" is "peoples". The singular noun "people" (meaning a population with shared ethnicity, or something of the kind) is derived from the plural noun "people".
Fish can be a singular count noun, and its usual plural is also fish. Fruit as a singular count noun has the plural of fruits.
However, both fish and fruit more commonly appear as noncount nouns, which do not have plurals.
When do you use the plural count noun fruits? You use fruits to refer to different species of fruit. However, fruits as a plural count noun as in these sentences is much less frequent than fruit as a noncount noun.
I think the plural of fruit-as-count-noun can also be "fruit". The question "How many fruit did you get?" when someone has just been shopping doesn't seem an ill-formed one.
@thecoder16 yes, "how many fruit" is unusual but it's not (I think) impossible. "Go and buy some apples and pears. I need at least six." ... "So, how many fruit did you get?"
In any case, I don't see how you get from "fruit is already plural" to "you can't ask how many fruit". "Berries" is plural but you can ask "how many berries?".
To me, "how much fruit" is answered in kilos or litres or something (a small basketful, enough for a pavlova, enough to last us a couple of days) whereas "how many fruit" is answered with a number (six, but one of them's rather small).
@GarethMcCaughan I don't see how you get from "fruit is already plural" to "you can't ask how many fruit". "Berries" is plural but you can ask "how many berries?".
Find the missing number in the following table.
Answer Options are:
25
27
32
30
