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Questions and Answers
Which symbol represents the 'Union' of sets?
Which symbol represents the 'Union' of sets?
- ⊃
- ∩
- ⊂
- ∪ (correct)
What does it mean when we say an element is a 'member' of a set?
What does it mean when we say an element is a 'member' of a set?
- The element is a number.
- The element is a part of the set. (correct)
- The element is a lowercase letter.
- The element is a friend of the person who created the set.
What is the correct way to write a set with the elements 'hat', 'shirt', 'jacket', and 'pants'?
What is the correct way to write a set with the elements 'hat', 'shirt', 'jacket', and 'pants'?
- [hat, shirt, jacket, pants]
- <hat, shirt, jacket, pants>
- (hat, shirt, jacket, pants)
- {hat, shirt, jacket, pants} (correct)
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Study Notes
Set Theory Basics
- The symbol for the 'Union' of sets is ∪. It indicates the combined elements of two or more sets without duplicating any elements.
Membership in Sets
- An element is a 'member' of a set if it is one of the objects contained within that set. This membership is denoted using the symbol ∈, which translates to "is an element of."
Writing a Set
- A set containing the elements 'hat', 'shirt', 'jacket', and 'pants' can be correctly written as {hat, shirt, jacket, pants}.
- Elements in a set are typically enclosed in curly braces and are separated by commas.
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