Question

Description, Listing, and Set - builder are the
Methods of describing a set.
Types of sets.
Operation of sets.
Cardinality of set.

Answer 1

Answer:

it is type of set .

Step-by-step explanation:

we can also say methods of set

Answer 2

Answer:

Method of describing a set.

Step-by-step explanation:

Because

Listing method:-

In this method we write all the elements of the set in a curly bracket {_}. It is also known as roster method.

Set-builder Method:-

In this method we do not write the list of elements but write the general element using variable followed by a vertical line or colon and write the property of the variable.

Ex.

A= {x/x is Natural no., 1<x<10}