volume_mute

What do you call the below set?

publish date: 2022/07/05 00:05:00 GMT+10

volume_mute

A = {∅, {1, 2}, {3}, {4, 5}}

set of elements
superset
set of sets
Invalid symbolic expression

Correct Answer

set of sets

Explanation

A set may itself be sometimes an element of another set. A set whose elements are set(s) is called set of sets. For example, A = {∅, {1, 2},{3}} is a set of sets.

Reference

Introduction to Differential Calculus (Systematic Studies with Engineering Applications for Beginners) - 2012

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