"A setting" is a noun. It refers to a place.
Without the word "a" in front, it becomes a verb, or action word, e.g. "I was setting the table for Chrostmas dinner when I heard a knock at the door."
A fraction.
as a set {}
Circle Graph!
past
Fraction
Flumpy is part of the set called the Fluffies, along with Dipsy, Honey and IGGY.
Part of it in Central Park and then the other is a set
mass
Industrial Operations set
What did Americans call the part of America where they set up their first colony?
a whole number
Yes. A null set is always a subset of any set. Also, any set is a subset of the [relevant] universal set.