Sets and Venn diagrams

What does the shaded portion of the Venn diagram represent?

• Band and Art
• Only Art
• Band or Art
• Neither

Identify the shaded area...

• A

• B

• A'

• B'

Identify the shaded area...

• A∩B

• A∪B

• A'∩B'

• A'∪B'

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}

If U = {1,2,3,4,...,12}, A = {2,3,4,5}, B = {4,5,6,8,9,11}, C = {6,7,8,9}, find: AUB = ?

• A. {2,3,4,5}

• B. {4,5,6,8,9,11}

• C. {2,3,4,5,6,8,9,11}

• D. {2,3,4,5,6,9,11}

If U = {2,3,4,5,...., 12}, A = {2,3,4,5}, B = {4,5,6,8,9,11}, C = {6,7,8,9}, find: 

 $A\cap B$  

• A. {4,5,6}

• B. {6,7}

• C. {6,7,8,9}

• D. {4,5}

Which set operations illustrates the Venn diagram?

• $A\cap B\cap C$

• $A\cup B\cup C$

• $A\cup B\cap C$

• $A\cap B\cup C$

Among the 90 kids of Barangay Magana, 63 like eating in Jollibee while 52 like eating in Mc Donalds. How many of them like eating in both Jollibee and Mc Donalds?

• 32

• 23

• 25

• 52

Which of these is an empty set?

• The set of green apples.

• The set of two-legged elephants

• The set of white shirts

• The set of green bananas

How many students took the survey?

• 32

• 47

• 53

• 56