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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 8 - Mathematics
4.49 Sets - Basic Operations - Union, Intersection and Compliment

There are 3 basic operations we can perform on a set.
1) Union: Combine two sets A and B to get their Union written as A U B and read as A is a union of B or A union B.
2) Intersection: Find what 2 sets A and B have in common written as A B and read as A is an intersection of B or A intersects B.
3) Compliment: To find out what is in the universal set but not in the given set A, and is written as A1 and read as A compliment or A prime.

Example:
If M is a set of months in a year, indicate whether the following statements are True or False.
M = {January, February} -----> False since it is not a complete set of monts in a year.
February M -----> True
Monday M ----> False

Example:
A = {1,2,3,4,5,6,7} and B = {3,7,8}
A U B = {1,2,3,4,5,6,7,8}
A B = {3,7}

Directions: Solve the following problems. Also write at least five examples of your own.
Q 1: A A =
A
universal set
null set
A1

Q 2: Set contains all odd numbers. Set B contains all even numbers. A B = ______.
null set
set B
set A
universal set

Q 3: A = {1,2,3,4,5,6} and B = {1,2,3,4,5,6} Which of the following represent A B?
null set
universal set
set A

Q 4: Set A contains all odd numbers. Set B conatians all even numbers. A U B = ____.
even numbers {2,4,5,6,........}
natural numbers {1,2,3,4,5,.......}
odd numbers {1,3,5,7,9,......}

Q 5: A = {4,5,7} and B = {2,3,6} then A U B = ______?
{2,3,4,5,6,7}
{2,3,4,5,6}
{4,5,7,3,6}

Q 6: A = { 1,5,3,7,9} and B = {2,3,4,5,6} then A B = ____
{5,3,6}
{3,5}
{4,5}

Q 7: A = {1,2,3} and B = {4,5,6} then A B = ______?
A prime
universal set
{}

Q 8: A = {1,2,3,4} and B = {2,4,6} Which of the following represent A U B?
{1,2,3,4}
{1,2,3,4,6}
{1,3,4,6}
{2,3}

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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