Activity on Union and Intersection of Sets

Author:
Jelliane

Question 1. If A= {2, 5}, B= {5, 7, 9}, and C= {0, 1,2,3,4,5,6,7,8,9}, determine the elements and cardinality of the following set.

a. A U B

b. A U C

c. A U B U C

d. A ∩ B

e. B ∩ C

f. A ∩ B ∩ C

Question 2. Of 50 cat and dog owners surveyed, 25 have a cat. Ten owners have a dog and a cat. How many owners have a dog only?

Question 3. Explain briefly the importance of the union and intersection of sets in our daily life.