Question
What is the greatest common factor of 3 and 15?
✓
Answer
The factors of 3 are 1 and 3.
The factors of 15 are 1, 3, 5 and 15.
Therefore, the greatest common factor of 3 and 15 is 3.
The factors of 15 are 1, 3, 5 and 15.
Therefore, the greatest common factor of 3 and 15 is 3.
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