B3M1Q1

What type of set is denoted as either { } or ∅?

• Universal Set
• Empty (or Null) Set
• Disjointed Set
• Complement of a Set

The set of natural numbers

• Null set

• Unit set

• Finite set

• Infinite set

What are the subsets of {4,3,2,1,5}

• { }

• { 1,2,3}

• {2,4,6,8}

• {1,2,3,4,5}

If A = { 1,2,3,4} and B= {a,b,c,d} then they are _______ sets.

• Singleton

• Equal

• Equivalent

• Empty

Suppose A={factors of 20} and B={factors of 12}, what is  $A\cap B$  ?

• {1, 2, 4}

• {1, 2, 3, 4, 5, 6, 10, 12, 20}

• {12, 20}

• {3, 5, 6, 10, 12, 20}

The Universal Set = { -4, -3, -2, -1, 0, 1, 2, 3 ,4} and A = {0}.

What is the complement of A?

• {-4, -3, -2, -1, 0, 1, 2, 3}

• {-3, -2, -1, 1, 2, 3}

• {-4, -3, -2, -1, 1, 2, 3, 4}

• {-4, -3, -2, -1, 1, 2, 3}

How many students do not snowboard?

• 21
• 22
• 28
• 29

__________ decimal is a decimal with a finite number of digits.

• A terminating

• A rational

• An irrational

• A repeating

Which of these is an example of a rational number?

• √4

• √5

• √3

• √2

Perfect Squares are irrational

• True

• False