The greatest common factor of 6 and 21 is 3.
The greatest common factor (GCF) is 3.
It is: 3
the greatest common factor of 6 an 21 is 3 because 6's factors are 1,2, 3and 6 and 21's is 1,3,7, and 21. So the greatest one of those is 3.Yo its 3 :D
It is: 3
The greatest common factor of 18 21 and 42 is 3.
The GCF is 3.
The GCF is 3.
The greatest common factor in 3
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.
As 4 & 21 have no factors in common, gcf=1
The GCF is 3.