Question

answer please friends you answer correctly means I make has brand list​

Answer 1

Answer:

1.Set

2.singelton set

3 set

Answer 2

Answer:

A set is a well-defined collection of distinct objects, i.e. the nature of the object is the same, or in other words the objects in a set may be anything: numbers, people, places, letters, etc. These objects are called the elements or members of the set.

A set that contains only one element is called Singleton or unit set.

Two sets are said to be disjoint when they have no common element. If a collection has two or more sets, the condition of disjointness will be the intersection of the entire collection should be empty. Yet, a group of sets may have a null intersection without being disjoint.