Answer:
Sets
In modern mathematics, just about everything rests on the very important concept of the set .
A set is just a collection of elements, or members. For instance, you could have a set of friends:
F=F= {Abdul, Gretchen, Hubert, Jabari, Xiomara}
or a set of numbers:
Y={−3.4,12,9999}Y={−3.4,12,9999}
There are two methods of representing a set :
(i) Roster or tabular form
(ii) Set-builder form.
Roster or tabular form: In roster form, all the elements of a set are listed, the elements are being separated by commas and are enclosed within braces { }.
