Algebra 1 Quiz on Sets and Numbers

What is a set?

• A number

• A single object

• A collection of objects

• An empty collection

What symbol represents an empty set?

• []

• ∅

• Ø

• {}

What does the symbol '∈' represent?

• Not an element

• An element

• A subset

• A union

What is the union of sets?

• Elements that appear in any of the sets

• Elements common to all sets

• Elements that are not in the sets

• Elements that are in one set only

What does the symbol '∩' represent?

• Empty set

• Subset

• Intersection of sets

• Union of sets

What is a Venn diagram used for?

• To show equations

• To represent numbers

• To calculate sums

• To represent sets in picture form

What does it mean if set A is a subset of set B?

• B is empty

• All elements of A are in B

• B has more elements than A

• A and B are equal

Which of the following is a natural number?

• 0

• -1

• 1

• 3.5

What is the set of whole numbers?

• {...–3, –2, –1, 0, 1, 2, 3,...}

• {a/b | a, b ∈ Z, b ≠ 0}

• {0, 1, 2, 3,...}

• {1, 2, 3,...}

Which of the following is an example of a rational number?

• π

• 0.5

• 3.14159

• √2