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15: 1,3,5,15 20: 1,2,4,5,10,20

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What are the common factors of 15 and 20?

The factors of 15 are 1, 3, 5, and 15. The factors of 20 are 1, 2, 4, 5, 10, and 20. The common factors are 1 and 5.


What are the common factors of 15 and 60?

The factors of 15 are 1, 3, 5, and 15 The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60 The common factors of 15 and 60 are 1, 3, 5, and 15


What is the greatest common factor for 45 and 60?

The factors of 45 are 1, 3, 5, 9, 15, and 45. The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60. The common factors are 1, 3, 5, and 15. Therefore, the greatest common factor is 15. You can also determine the greatest common factor from the prime factors. The prime factors of 45 are 3, 3, and 5. The prime factors of 60 are 2, 2, 3, and 5. The common prime factors are 3 and 5, so the greatest common factor is 3 x 5 = 15.


What are the greatest common factors of 45 55 and 20?

Factors of 45: 1, 3, 5, 9, 15, 45.Factors of 55: 1, 5, 11, 55.Factors of 20: 1, 2, 4, 5, 10, 20.GCF (45, 55, 20) = 5


What is the greatest common factor of 15 and 100?

One way to determine the greatest common factor is to find all the factors of the numbers and compare them.The factors of 15 are 1, 3, 5, and 15.The factors of 100 are 1, 2, 4, 5, 10, 20, 25, 50, and 100.The common factors are 1 and 5. Therefore, the greatest common factor is 5.The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.The prime factors of 15 are 3 and 5.The prime factors of 100 are 2, 2, 5, and 5.The prime factors in common are 5, so the greatest common factor is 5.ANSWER: 5The GCF is 5.