4. Write four common factors of: 15 and 12
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The factors of 12 are : 1, 2, 3, 4, 6, 12. The factors of 15 are : 1, 3, 5, 15. 1 and 3 are the only common factors (numbers which are factors of both 12 and 15). Therefore, the highest common factor of 12 and 15 is 3.
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Step-by-step explanation:
The factors of 12 are : 1, 2, 3, 4, 6,12. The factors of 15 are : 1, 3, 5,15. 1 and 3 are the only common factors
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