Sets (Maths) - Notation, Types, Symbols & Examples - BYJU'S
https://byjus.com/maths/sets/
webSets, in mathematics, are an organized collection of objects and can be represented in set-builder form or roster form. Usually, sets are represented in curly braces {}, for example, A = {1,2,3,4} is a set. Also, check the set symbols here. In sets theory, you will learn about sets and it’s properties.
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