2.2 Subsets

What is a proper subset?

• A proper subset is a subset that is not equal to the original set.

• A proper subset is a subset that contains all the elements of the original set.

• A proper subset is a subset that is a superset of the original set.

• A proper subset is a subset that is a proper superset of the original set.

Categorize each set given compared to set A: {1, 2, 3}.

Groups:

(a) Not a subset

,

(b) Proper subset

,

(c) Improper subset

• {1, 2}

• {1, 2, 3, 4}

• {1, 3}

• {1, 2, 3}

Tags

CCSS.5.OA.B.3

True or False: Every set is a proper subset of itself.

• False

• Sometimes

• Not sure

• True

What is the complement of set A if the universal set is U = {1, 2, 3, 4, 5} and A = {2, 4}?

Which of the following is the complement of set A if the universal set is U = {1, 2, 3, 4, 5} and A = {1, 3, 5}? A) {1, 2, 3, 4, 5} B) {2, 4} C) {2, 3, 4} D) {1, 3, 5}

Tags

CCSS.HSS.CP.A.1

True or False: The complement of a set always contains the elements that are not in the set.

• True

• False

• Sometimes

• Not sure

True or False: An empty set is a subset of every set.

• True

• False

• Sometimes

• Not sure

True or False: A set can be both a subset and a proper subset of another set.

• True

• False

• Sometimes

• Not sure

True or False: Let P = {3, 5, 7, 9, 11} Q = {9, 11, 13} R = {3, 5, 9} S = {13, 11} then R ⊂ P

• True

• False

Tags

CCSS.HSS.CP.A.1

True or False: Let P = {3, 5, 7, 9, 11} Q = {9, 11, 13} R = {3, 5, 9} S = {13, 11} then Q ⊂ P

• True

• False

Tags

CCSS.HSS.CP.A.1