It is: 1
the HCF or GCF is 3
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.
The Highest Common Factor is: 9
The highest common factor of 81 and 27 is 27
The greatest common factor of 81 and 135 is 27.
3 is the greatest common factor of 21, 27, and 51The GCF is 3.
Since 27 is a factor of 54, it is automatically the GCF.
nine
It is 9
It is 3