What is a Set? In mathematics, a set is simply a ____ of distinct objects. Think of it like a group of things. These things can be anything: numbers, letters, colors, or even other sets! The objects inside a set are called ____ or ____. For example, in the set {1, 2, 3}, the elements are ____ We use the symbol "____" to say that an element ____ to a set. For example, ____ {1, 2, 3} means "2 is an element of the set {1, 2, 3}". If an element is not in a set, we use the symbol ____. So, 4 ∉ {1, 2, 3} means "4 ____ of the set {1, 2, 3}". A ____ is a set that is contained within another set. If all the elements of set A are also elements of set B, then A is a subset of B. We use the symbol "____" to show that one set is a subset of another.

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