Sets and Venn Diagrams

Sets and Venn Diagrams

by Jacqueline Porwelos

Multiple Choice

Given the set A = {2, 3, 4, 5} and B = {2, 4, 5, 6} What is  A∪B  ?

• {2, 3, 4, 5, 6}

• {2, 2, 3, 4, 4, 5, 5, 6}

• {2, 4, 5, 6}

• {2, 4, 5}

Multiple Choice

Given the sets A = {2, 4, 6, 8} and B = {3, 4, 5, 6, 7} What is  B − A  ?

• {2, 3, 5, 7, 8} 

• {3, 5, 7}

• {4,6}

• {2, 4, 6, 8}

Multiple Choice

Q={3,5,8,9} , R={2,4,6,7} 

 Find Q∩R 

• { }

• {3}

• {2}

• {4}

Multiple Choice

Given the setsU = {a, b, c, d, e, f, g, h, i, j}

A = {a, c, e, g, i} and B = {b, c, d, e, f}.

What is  (A ∩ B)′  ?

• {a, c, e, g, i}

• {a, b, c, d}

• {a, b, d, f, g, h, i, j}

• {a, g, h, i, j}

Fill in the Blanks

In a group of 45 students,25 liked tea, 20 liked coffee and 10 students liked both then how many students don't like both ?

(You may want to use a Venn Diagram to organize)

Multiple Choice

In a class of 50, 25 students like Mathematics and 27 like Science. How many like both Mathematics and Science? Draw a Venn diagram to illustrate the relation?

• 4

• 2

• 1

• 5