9.1 Introduction to Set Theory

a "set" is collection of objects.

• True

• False

Tags

CCSS.K.CC.B.5

CCSS.K.MD.B.3

"Roster method" is a method to designate a set by describing.

• True

• False

Which method is used to designate the set { x | x ∈ N and x > 4 } ?

• Roster Method

• Descriptive Method

• Set-builder Notation

Empty set is a set with infinite elements.

• True

• False

Which of the following sets is empty?

• { x | x is a natural number divisible by 2 }

• { x | x is a human being traveled to the sun }

• { x | x is an even number between 3 and 5 }

The cardinal number of A = { x | x ∈ O and 10<x<20 }

• 5

• 10

• 15

{ x | x is a natural number greater than 20 } is :

• Finite Set

• Infinite Set

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.8

{ three } and { t, h, r, e, e } are :

• Equal

• Equivalent

• Equal and Equivalent

• Neither

Tags

CCSS.L.1.5A

CCSS.L.1.5B

CCSS.L.K.5A

Which set makes { 2, 4, 6, 8 } a one-to-one correspondence :

• { 2468 }

• { a24, b68 }

• { a, b, c, d }

• { a, b, c, d, e }

Tags

CCSS.2.MD.B.6

Is {0} equivalent to ϕ?

• Yes

• No