Chapter 5.1A, Problem 18A

To determine

a)

To find:

The set $W\cup I$ if W stand for the set of whole numbers and I is the set of integers.

To determine

b)

To find:

The set $W\cap I$ if W stand for the set of whole numbers and I is the set of integers.

To determine

c)

To find:

The set $I^{+}\cap I^{-}$ if $I^{+}$ stand for the set of positive integers and $I^{-}$ stands for the set of negative integers.

To determine

d)

To find:

The set $W-I$ if W stand for the set of whole numbers and I is the set of integers.