Probability and Sets

Set  Q  contains the letters in the word  SISTER .
 Which of the following is set  Q ?

• Q = { S, T, R }
• Q = { I, E }
• Q = { S, I, S, T, E, R }
• Q = { S, I, T, E, R }

Where would you place the number -9 on the diagram?

• Integers
• Whole 
• Natural 
• Rational

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

• Superset

• Empty (or Null) Set

• Disjointed Set

• Subset

If every element in set A is also in set B, then...

• A is a subset of B
• B is a subset of A
• A = B
• A and B are disjoint

What is #A?

• 9

• {1,3,5,9}

• 5

• 4

If A = {1, 3, 5, 7, 9} and B = {2, 3, 5, 7}, what is A ∪ B?

• {3, 5, 7}
• {2, 3, 5, 7}
• {2, 3, 5, 7, 9}
• {1, 2, 3, 5, 7, 9}

If A = {1, 3, 5, 7, 9} and B = {2, 3, 5, 7}, what is A ∩ B?

• {3, 5, 7}

• {2, 3, 5, 7}

• {2, 3, 5, 7, 9}

• {1, 2, 3, 5, 7, 9}

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}

If 
U (the universal set) = {1, 3, 5, 7, 9, 11, 13, 15, 17} and W = {5, 7, 9, 11}, then W' = . .  ..
 

• 1, 3, 13, 15, 17}
• {1, 3}
• {2, 4, 6, 8, 10, 12, 14, 16}
• {1, 3, 5, 7, 9, 11, 13, 15, 17}{

What is the probability of choosing the letter
i from the word probability?

• 1/10
• 2/11
• 2/2
• 1/10