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1, 3, 5 and 15

The common factors are: 1, 3, 5, 15.

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1, 3, 5 and 15.

Q: What are the common factors of 90 15 and 45?

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The factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, and 90 The factors of 135 are 1, 3, 5, 9, 15, 27, 45, and 135 The common factors of 90 and 135 are 1, 3, 5, 9, 15, and 45

1, 3, 5, 15

The GCF of 45 and 90 is 45Definition: A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that the numbers have in common.Method:One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.The factors of 45 are 1, 3, 5, 9, 15, and 45.The factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, and 90.The common factors are 1, 3, 5, 9, 15, and 45. Therefore, the greatest common factor is 45.

1, 3, 5 and 15

HCF of two numbers a & b is b if a is divisible by b.Here, 90 is divisible by 45 so HCF is 45.Alternate Methods:1-Prime factorization of 45 = 3x3x5Prime factorization of 90 = 2x3x3x5From the factorization it is clear that GCF = 3x3x5 = 452-Factors of 45 are 1, 3, 5, 9, 15 & 45.Factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 30, 45 & 90.Common factors are 1, 3, 5, 9, 15 and 45 and the greatest common factor is 45.

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The common factors of 45 and 90 are 1,3,5

1, 3, 5 and 15

The factors of 15 are: 1, 3, 5, 15 The factors of 45 are: 1, 3, 5, 9, 15, 45 The factors of 90 are: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

The factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, and 90 The factors of 135 are 1, 3, 5, 9, 15, 27, 45, and 135 The common factors of 90 and 135 are 1, 3, 5, 9, 15, and 45

1, 3, 5 and 15

1, 3, 5, 15

The GCF of 45 and 90 is 45Definition: A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that the numbers have in common.Method:One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.The factors of 45 are 1, 3, 5, 9, 15, and 45.The factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, and 90.The common factors are 1, 3, 5, 9, 15, and 45. Therefore, the greatest common factor is 45.

Factors of 45: 1, 3, 5, 9, 15, 45.Factors of 75: 1, 3, 5, 15, 25, 75.Factors of 90: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90.GCF (45, 75, 90) = 15

Since 45 is a factor of 90, all of its factors are common.

1, 3, 5 and 15

1, 3, 5 and 15

The common factors of 90 and 720 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45 and 90.