Intro to Millwright Practice Exam 2025 - Free Millwright Skills Practice Questions and Study Guide

The numbers 0, 1, 2, and 3 are classified as whole numbers because whole numbers include all of the non-negative numbers starting from zero and moving upwards in increments of one. This set is defined as {0, 1, 2, 3, ...}, which confirms that these specific numbers fit perfectly within that range.

While integers also include 0, 1, 2, and 3, they also encompass negative numbers such as -1, -2, and so on. Therefore, while they are indeed integers, the term 'whole numbers' more specifically pertains to the non-negative aspect of this set.

Rational numbers refer to numbers that can be expressed as the quotient of two integers, where the denominator is not zero. This category includes fractions and decimals, in addition to all whole numbers and integers. Given that 0, 1, 2, and 3 can be expressed as rational numbers (for instance, 1 can be written as 1/1), this classification is broader than the correct answer.

Real numbers encompass all rational and irrational numbers, meaning it includes all possible numbers along the number line, such as fractions, decimals, and roots. While the numbers in the question