Geometry Unit 1 - 1.

The number of subsets that can be created from the set {1, 2, 3} is: 3 6 7 8

8

Select the finite sets. All whole numbers All natural numbers less than 100,000. All letters of the alphabet. All odd numbers All the world's population ∅

All natural numbers less than 100,000. All letters of the alphabet. All odd numbers All the world's population

Element

An object that belongs to a set; sometimes the word "member" is used

Finite set

Any set whose elements can be counted

Infinite set

Any set whose elements cannot be counted

Complement of a set

The elements in the universe that are not in the set

Which of the following is an infinite set? the set of lessons in this course the set of even numbers from 0 to 10 10 billion the set of integers the null set none of the above

the set of integers

List the following elements in proper set notation. Place the elements in numerical order within the set. 0 1 123 4 34

{0, 1, 4, 34, 123}

Give an example of an infinite set.

{1, 2, 3, 4, ...}

Which of the following is a subset of {1, 2, 3}? {0} {0, 1} {1, 2, 3} {1, 2, 3, 4}

{1, 2, 3}

Which of the following is correct set notation? (1,2,3) 1,2,3 {1,2,3} none of the above

{1,2,3}

List the set of all even numbers between 2 and 10, inclusive.

{2, 4, 6, 8, 10}

Which is a subset of {1, 2, 4, 5, 6}? {0, 1, 2} {3, 4} {5, 6, 7} {2, 6}

{2, 6}

Which of the following is proper notation to describe the set of all letters in the alphabet? {a, b, c, . . ., z} (a, b, c, etc.) a through z none of the above

{a, b, c, . . ., z}

The empty set (or null set) is a subset of _____ set(s) no other every some the infinite

every

The set of lessons in this geometry course is: finite infinite

finite

The set of counting numbers is: finite infinite

infinite

Which of the following is a subset of {1, 3, 5, 7, 9}? ∅ {1, 2, 3} {5, 6, 7} integers between 1 and 9

∅

Disjoint sets

Sets that have no common elements

The mathematical expression 2 ∈ V means: 2 is an element of set W 2 is a subset of set W 2 is an element of set V none of the above

2 is an element of set V

The mathematical expression 9 ∈ T means: 9 union T 9 intersection T 9 is an element of T 9 is not an element of T

9 is an element of T

The mathematical expression 9 ∉ T means: 9 union T 9 intersection T 9 is an element of T 9 is not an element of T

9 is not an element of T

Set

A collection or group of objects

A ⊆ B means: A is an element of B B is a subset of A B is an element of B A is a subset of B A is a subset of B and B is a subset of A

A is a subset of B

Subset

A set that contains only elements found in another set

Proper subset

A subset that does not contain every element in another set

Given the two sets: A = {1, 2, 3} B = {3, 2, 1} Which of the following is a true statement? 4 ∈ B A ⊆ B A is an infinite set ∅ ∉ B

A ⊆ B

Empty Set

Set that has no elements; sometimes called the null set