Question

A set consisting at a single element is called a ______ set​

Answer 1

A set consisting of a single element is called a $\blue{\underline{\bf\green{ \quad singleton \quad }}}$ set.

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Answer 2

A set consisting at a single element is called a Singleton set.

• Sets in mathematics, are simply a collection of distinct objects forming a group.
• Every item in the set is called an element of the set.
• Curly brackets are used while writing a set.
• The elements that make up a set can be any kind of mathematical objects: numbers, symbols, points in space etc.
• Sets can be classified into many types. Some of which are finite, infinite, subset, universal, proper, singleton set, etc.
• There are primarily 8 types of sets that are used in Mathematics
• Singleton set is a set containing only one element.
• The singleton set is of the form A = {a}
• It is also called a unit set.
• The singleton set has two subsets, which is the null set, and the set itself.
• The number of singleton sets that are subsets of a given set is equal to the number of elements in the given set.
• The cardinality of a singleton set is one.
• The singleton set has two subsets.

• Null set is a subset of every singleton set.

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