The common factor of 3 and 21 is 3. *
Three (3) is a common factor of 21 and 22.
The GCF is 3.
The factors of the two numbers are :- 51 : 1, 3, 17 and 51 21 : 1, 3, 7 and 21. Ignoring the trivial factor of 1, the only common factor and therefore the greatest common factor is 3.
The Greatest Common Factor of 60, 21, 9: 3
6 factors into [2 3] 21 factors into [3 7] Common factor is [3]◄
The greatest common factor (GCF) of 21 and 9 is 3.
The greatest common factor of 21 and 75 is 3.
The greatest common factor of 21 and 162 is 3.
The greatest common factor of 18 and 21 is 3.
The Greatest Common Factor of 21, 9 is 3.
the greatest common factor for 21 and 24 is 3.
The greatest common factor of 21 and 102 is 3.