Set Theory Probability

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

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 does this symbol ( ∩ ) represent in set theory?

• Union

• Intersection

• Disjointed

• Subset

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

• Universal Set

• Empty (or Null) Set

• Disjointed Set

• Complement of a Set

What is n(D ⋃ M)?

• 5

• 7

• 2

• 4

Determine the number of people who participated in weight-training (W) and cardio (C).

• 15

• 54

• 69

• 75

Determine n(W ⋂ C)'

• 6

• 15

• 54

• 60

How many senior boys play football and wrestle?

• 9

• 12

• 18

• 39

Left Pocket (L) = {pencils, erasers, pens}
Right Pocket (R) = {gloves, paper, coins, phone}
What is L ∪ R?

• ∅

• {pencils, erasers, pens}

• {gloves, paper, coins, phone}

• {pencils, erasers, pens, gloves, paper, coins, phone}

What does this symbol ( ∪ ) represent in set theory?

• Union

• Intersection

• Disjointed

• Subset