Intro to Set Theory

Which of the following is the symbol of an empty set?

• $\cap$

• $\cup$

• $\subseteq$

• $\phi$

Which of the following is a subset of A = {1,2,3}

• {0}

• {0,1}

• {1,2}

• {2,3,4}

Which one of the following sets is infinite?

• The set of whole numbers less than 10

• The set of prime numbers less than 10

• The set of integers less than 10

• The set of factors of 10

A is the set of factors of 18.

Which of the following is not a member of A?

• 2

• 3

• 5

• 9

Tags

CCSS.4.OA.B.4

1. An object or member in a set is called __________.

• an element

• an item

• a person

• a thing

If A = {even numbers less than 13}, then

• A = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}

• A = {1,3, 5, 7, 9, 11}

• A = {2, 4, 6, 8, 10, 12}

• A = {2, 4, 6, 8, 11,}

Tags

CCSS.5.OA.B.3

Which of the following best describes set P, where P = { car, train, aeroplane, boat}

• {types of public transportation}

• {name of places most visited}

• {four things in the country}

• None of the above

If U = {1, 3, 5, 7, 9, 11, 13}, which of the following is a subset of U?

• M = {2, 4}

• N = {0}

• O = {4, 5, 13}

• P = {5, 11, 1}

It is a set of which all the elements are contained in another set.

• Element

• Universal Set

• Subset

• Proper Subset

We use lower case letters to name a set.

• True

• False