Just 1.
Common factors of 7 and 20 are: 1.
The least common factor is: 1
To find the greatest common factor, you first need to break the numbers down into their prime factors. In this case: 7 = 7 15 = 3x5 The next step would be to identify any common prime factors. In this case, however, there are no common prime factors. Thus the only prime factor is 1. So the greatest common factor of 7 and 15 is 1.
105, 210, 315
The factors of 7 are 1 and 7 The factors of 9 are 1, 3, and 9 So the greatest common factor is 1
1,7 1,2,4,8
There are no common factors of 15 because there cannot be common factors without two or more numbers to compare. Common factors are factors that the numbers being compared have in common.The factors of 15 are 1, 3, 5, and 15.Examples:The common factors of 6 and 15 are 1 and 3.The common factors of 15 and 90 are 1, 3, 5, and 15.1,5,3, and 15.
Since 15 is a factor of 45, its factors are the common factors of 15 and 45. The factors of 15 are 1, 3, 5, and 15. The factors of 45 are 1, 3, 5, 9, 15, and 45. The factors they have in common are 1, 3, 5, and 15.
The factors of 15 are 11, 3, 5 and 15. For them to be common, they need to be compared to another set of factors.
The factors of 15 are 1, 3, 5, 15. For them to be common, they need to be compared to another set of factors.
The common factors of 15 and 50 are 1 and 5
The common factors of 15 and 63 are: 1 and 3