Question

definition of single set four to five lines

Answer 1

Answer:

A set is a well-defined collection of objects. Each object in a set is called an element of the set. Two sets are equal if they have exactly the same elements in them.

Answer 2

Answer:

In mathematics, a singleton, also known as a unit set, is a set with exactly one element. For example, the set {null} is a singleton.

The term is also used for a 1-tuple (a sequence with one member).

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