SV 2.1: Basic Set Theory
This method for defining a set consists of stating every element in the set.
What is the Roster Method?
Associated with the word "and", this set consists of the elements that two other sets have in common.
What is the intersection?
A Venn Diagram is a visual representation of how two sets relate to each other. The middle section of a Venn Diagram is called this.
What is the Intersection?
This is the Cardinality of the set of even numbers.
What is infinity?
Daily Double: The third planet from the sun.
What is Earth?
This method for defining a set consists of using a description of the elements, as opposed to stating them explicitly.
What is the Verbal Description Method?
Associated with the word "or", this set consists of all elements that are in either one set, the other, or both.
What is the Union?
Set A consists of those who own a Cat. Set B consists of those who own a Dog. This is the intersection of sets A and B.
Who are those who own both a cat and a dog?
Daily Double: This is the current Win/Loss for the Arizona Cardinals (October 15th, 2025)
What is 2/4
This type of function is a fraction of two polynomials.
What is a Rational Function?
This "constructive" method for defining a set is basically only used in a Mathematical setting.
What is the Set-Builder Method?
If my Universal Set is the set of months in the year, these elements are in the set "words with 5 or less letters."
What are March, April, May, June, July
Set A consists of Left Handed Scholars. Set B consists of Right Handed Scholars. What is the union of sets A and B?
This is the Cardinality of this set:
{1, 2, 3, ..., 18, 19, 20}
What is twenty?
This formula could be used to factor the following:
(x^2 - 100)
What is the difference of squares?
Daily Double: What all elements are either inside or outside of the set, with no ambiguity, the set is called this.
What is Well-Defined?
Typically associated with the word "not", this set consists of all elements that are in the Universal Set, but not in the original set.
What is the Complement?
Set A consists of all odd numbers. We need to know this before finding the set of A complement.
What is the Universal Set?
This is the Cardinality of the set of days of the week.
What is Seven?
This formula can be used to solve any degree two polynomial.
What is the Quadratic Formula?
When there is nothing inside of a set, it is called this.
What is the Empty-Set?
This set is taken as the set of all elements that are relevant to the current problem.
What is the Universal Set?
Daily Double: The Venn Diagram was named after this man.
Who is Venn?
To determine if two infinite sets have the same cardinality, we use this.
What is a Function?
The first step in solving an Absolute Value Equation is to do this
What is to Isolate the Absolute Value Expression (or portion)?