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What is the HCF of 14, 28, and 42?

Practice Questions

Q1

What is the HCF of 14, 28, and 42?

14
7
28
21

Questions & Step-by-Step Solutions

What is the HCF of 14, 28, and 42?

Correct Answer: 14

Step 1: List the numbers we want to find the HCF for: 14, 28, and 42.
Step 2: Find the factors of each number.
Step 3: The factors of 14 are: 1, 2, 7, 14.
Step 4: The factors of 28 are: 1, 2, 4, 7, 14, 28.
Step 5: The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42.
Step 6: Identify the common factors from all three lists: 1, 2, 7, 14.
Step 7: The largest common factor is 14.
Step 8: Therefore, the HCF of 14, 28, and 42 is 14.

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