5 is the greatest common factor of 5 and 15. The only other common factor is 1.
Since 5 is a factor of 15, it is automatically the GCF.
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The greatest common factor of 15 and 55 is 5.
The greatest common factor of 15, 20, and 25 is 5.
Since 15 is a factor of 75, and 15 is its own largest factor, the greatest common factor must be 15.Another 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 75 are 1, 3, 5, 15, 25, and 75.The common factors are 1, 3, 5, and 15. Therefore, the greatest common factor is 15.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 75 are 3, 5, and 5.The prime factors in common are 3 and 5, so the greatest common factor is 3 x 5 = 15.It is 15
The Greatest Common Factor (GCF) is: 1
5 is the greatest common factor of 15 and 305.15 factors to [3 5]305 factors to [5 61]common factors are [5] ■5A:5