# set theory

If we define the following two sets:

A = {1, 2, 3, 4, 5}

B = {5, 6, 7, 8, 9}

What are the following:

A - B?

A union B? (The union of A and B)

A intersect B? (The intersect of A and B)

https://brainmass.com/computer-science/coding-and-information-theory/working-set-theory-subtraction-union-intersection-2594

#### Solution Preview

A - B = {1, 2, 3, 4}

We take set A and remove any elements from it that are found in set B. In this case, the ...

#### Solution Summary

This job applies set theory. The subtraction, union and intersection is examined.

$2.19