To find the Highest Common Factor of 12 and 18 , which ONE of the following steps is used? a. Divide 12 and 18 by 3 and multiply the results b. List several factors of each of 12 and 18 and among them, select the highest. c. Multiply 12 by 18 and then divide by 6 . d. Divide the sum of 12 and 18 by their difference.
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Bonus Knowledge
To find the Highest Common Factor (HCF) of 12 and 18, one effective method is to list the factors of each number. For 12, the factors are 1, 2, 3, 4, 6, and 12. For 18, the factors include 1, 2, 3, 6, 9, and 18. The highest factor that appears in both lists is 6, making it the HCF. If you ever mix up the steps, just remember that the core idea is to identify numbers that can divide both 12 and 18 evenly. Listing their factors is both a simple and reliable approach—just keep your eyes on those common numbers!
