What is a factor of a number?

• A whole number that is part of a multiplication problem.

• A number that is multiplied by itself.

• The result of a multiplication problem.

• A number that is always greater than the original number.

Which of the following is the complete list of factors for the number 12?

• {1, 2, 3, 4, 6}

• {1, 2, 3, 4, 6, 12}

• {2, 3, 4, 6}

• {1, 12}

What does it mean for two numbers to have a common factor?

• They are both even numbers.

• They share the same factor.

• They are both prime numbers.

• They can be added together.

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What is the Greatest Common Factor (GCF) of 12 and 42?

• 1

• 2

• 3

• 6