Set Definition and Notation

Sets
Bebs Ever Tots

Sets

Definition

• Any well - defined collection or group of distinct objects

• distinct objects means that there are no duplicate elements in the sets.

Example of Sets

Context

• set of unit digits

• A = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}

• A = {x | x are unit digits}

Let's Practice!

Multiple Choice

Identify if the set is well - defined or not

The set of honest people.

• Well - defined

• Not well - defined

Multiple Choice

Identify if the set is well - defined or not

The set of even numbers.

• Well - defined

• Not well - defined

Multiple Choice

Identify if the set is well - defined or not

The set of big people

• Well - defined

• Not well - defined

How to Read Sets?

• Sets can be named by Letters or Symbols

• What is inside the braces is called the elements.

Let's Practice!

Multiple Choice

Identify the Set Name

R = {s, t, u, v}

• R

• s

• t

• u

• v

Multiple Choice

Identify the element.

R = {r}

• R

• r

Notation

It is how you identify a set.

• Description

• Listing/Roster

• Set - Builder
  

Let's Practice!

Multiple Choice

Identify the type of set notation.

A = {r, e, a, d}

• Listing

• Description

• Set Builder

Multiple Choice

Identify the type of set notation.

Set C is the set of natural Earth satelite.

• Listing

• Description

• Set Builder

Multiple Choice

Identify the type of set notation.

D = {x | x is branch of Mathematics}

• Listing

• Description

• Set Builder

Summary

Remember these!

• Set is a well - defined collection or group of distinct objects.

• Sets can be written by description, listing or roster, and set builder.

Open Ended

What is your key take away in this lesson?

Thank you for learning.