a). much many
Ans : Use much with uncountable nouns and many with countable nouns.
b). fewer less
Ans : Use fewer with countable nouns and less with uncountable nouns.
c). some any
Ans : Use some in statements and any in questions or negative statements.
Eg. Do you have any apples? I have some / I don’t have any
d). experience experiences
Ans : Experience refers to the uncountable amount of experience accrued.
Experiences is countable, ie. many experiences