Sets - Definitions and Notation

What is a set?

• A collection of well - defined elements

• A list of things

• A group of things

• A series of things

What do curly brackets { } mean?

• A set

• A group

• Instructions

• An aside, not meant for everyone

What does "well defined" mean?

• Something that is clear and the same for anyone.

• The best definition

• Your favorite definition

• An answer

Tags

CCSS.RI.11-12.4

CCSS.RI.7.4

CCSS.RI.8.4

CCSS.RI.9-10.4

CCSS.RI.9-10.4

What does

 $\in$  mean?

• An element of

• Extra

• Sometimes less than

• There exists something

What does

 $\notin$  mean?

• Not an element of

• Not extra

• Not sometimes less than

• There does not exist something

Tags

CCSS.4.OA.B.4

Give an example of set builder notation.

• {this is a set}

• {x|x>0}

• {2<x<5}

• { }

What is a cardinal number?

• How many elements are in a set

• PI

• Decimal numbers

• Negative numbers

Tags

CCSS.5.OA.B.3

What is a finite set?

• A set with a fixed number of elements

• A set with more than 1 number

• A set with limitless elements

• A set with no elements

What is an infinite set?

• A set with a fixed number of elements

• A set with more than 1 number

• A set with limitless elements

• A set with no elements

What is a NULL set

• A set with no elements

• A set where elements are not well-defined

• A set 0 as one of the elements

• A set with zero as the only element

Tags

CCSS.8.NS.A.2