jooyoung99
Choice 1: "a seemingly limitless number of needs and desires, all of them arising out of"
Choice 2: "a seemingly limitless number of needs and desires, each arising from"
From
Manhattan prep course SC, I thought "a number of" is always plural and "the number of" is always singular. On this question, I selected choice 1 because "a number of" is plural. But on the answer explanation, it shows that choice 2 is the correct answer since "a number of" is singular.
Hi
jooyoung99, I am assuming you did
not choose choice 2 because you thought that
each (singular) does not align with
needs and desires (plural).
The thing is that when we say that
a number of is always
plural, what me mean is that the
verb associated with
a number of will be plural.
However, here,
all of them / each is not really a subject-verb agreement issue at all.
all of them / each is acting as a
modifier. So, when the sentence says
each, it implies
each (of them). Hence, this is a valid construct.
If you logically think about it,
each as a modifier will always follow a
plural noun. A similar example from OG:
Chinese, the most ancient of living writing systems, consists of tens of thousands of ideographic characters, each character a miniature calligraphic composition inside its own square frame.