Q: What are the greatest common factor of 21 and 27 81?

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The GCF of 21, 27, and 39 is 3.

The greatest common factor of 21 and 27 is 3 because that is the highest number that goes into 21 and 27. To find the highest common factor of two numbers, you first have to break them down into their prime factors. In this case, the prime factors of 21 and 27 are: 21 = 3x7 27 = 3x3x3 The next step is to identify any common factors. In this case, the only common prime factor is 3. Thus, the highest common factor of 21 and 27 is 3.

Answer: 3Definition: 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 15 are 1, 3, 5, and 15.The factors of 21 are 1, 3, 7, and 21.The factors of 27 are 1, 3, 9, and 27.The common factors are 1 and 3. Therefore, the greatest common factor is 3.

The GCF of 21, 24, and 27 is 3.The Greatest Common Factor (GCF) is: 3

The greatest common factor of 27 and 36 is 9.

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3 is the greatest common factor of 21, 27, and 51The GCF is 3.

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The GCF of 21, 27, and 39 is 3.

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The GCF is 3.

The greatest common factor of 21 and 27 is 3 because that is the highest number that goes into 21 and 27. To find the highest common factor of two numbers, you first have to break them down into their prime factors. In this case, the prime factors of 21 and 27 are: 21 = 3x7 27 = 3x3x3 The next step is to identify any common factors. In this case, the only common prime factor is 3. Thus, the highest common factor of 21 and 27 is 3.

Answer: 3Definition: 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 15 are 1, 3, 5, and 15.The factors of 21 are 1, 3, 7, and 21.The factors of 27 are 1, 3, 9, and 27.The common factors are 1 and 3. Therefore, the greatest common factor is 3.

what is the greatest common factor of 21 27 and 39

The greatest common factor of 21 and 54 is 3. The greatest common factor is the highest number that divides exactly into two or more numbers. factors of 21: 1, 3, 7, 21 factors of 54: 1, 2, 3, 6, 9, 18, 27, 54 The greatest common factor of 21 and 54 is 3.