Set Theory

Question 1

What is represented in the union of sets A and B?

Answer 1

All of the values in both set A and set B

Question 2

What is represented in the intersection of sets A and B?

Answer 2

Only the values common to both set A and set B

Question 3

How do you write union of sets A and B, in notation?

Answer 3

A∪B

Question 4

How do you write intersection of sets A and B, in notation?

Answer 4

A∩B

Question 5

If set A has p number of elements, set B has q number of elements, and set (A∩B) has r number of elements, what is the formula for set (A∪B)?

Answer 5

Set (A∪B) = p + q - r