GED Math Practice Test 2025 - Free GED Exam Practice Questions and Study Guide

Question: 1 / 400

What is the highest common factor of 12 and 16?

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To find the highest common factor (HCF) of 12 and 16, it's helpful to list the factors of each number:

- The factors of 12 are: 1, 2, 3, 4, 6, 12.

- The factors of 16 are: 1, 2, 4, 8, 16.

Next, identifying the common factors from both lists gives us 1, 2, and 4. The highest of these common factors is 4. This indicates that 4 is the largest number that can evenly divide both 12 and 16 without leaving a remainder.

Understanding the concept of factors clarifies why 4 is the correct answer. The factors of a number are the integers that can divide that number evenly. The process of finding the HCF helps in various mathematical applications, including simplifying fractions and determining common denominators.

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