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• 03:37, 24 May 2025 Thakshashila talk contribs created page Subsets (Created page with "= Subsets - Definition, Types, and Examples = In set theory, a '''subset''' is a set whose elements all belong to another set. Subsets are fundamental in understanding the relationships between sets. == Definition of Subset == A set <math>A</math> is called a '''subset''' of a set <math>B</math> if every element of <math>A</math> is also an element of <math>B</math>. This is written as: <math>A \subseteq B</math> This means: <math>\forall x (x \in A \Rightarrow x \i...")