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The factors of 15 are:

1, 3, 5, 15

The factors of 36 are:

1, 2, 3, 4, 6, 9, 12, 18, 36

The factors of 42 are:

1, 2, 3, 6, 7, 14, 21, 42

The common factors are:

1, 3

The Greatest Common Factor (GCF) is:

3

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Q: What is the GCF and LCF of 15 36 42?
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