Final answer:
The set contains integers and a rational number.
Step-by-step explanation:
The set {-1, 5, 15, 3.75, 36, 181, 1003} contains different types of numbers. Let's discuss each type:
Integers: Integers are whole numbers that can be positive, negative, or zero. In this set, -1, 5, 15, 36, and 181 are integers.
Rational Numbers: Rational numbers are numbers that can be expressed as a fraction of two integers. In this set, 3.75 can be written as 15/4 which is a rational number.
Irrational Numbers: Irrational numbers cannot be expressed as a fraction and have non-repeating decimal representations. In this set, there are no irrational numbers.
Whole Numbers: Whole numbers are non-negative integers, including zero. In this set, there are no whole numbers.