2
2*21 = 42
2*8 = 16
GCF of 21 and 42: 21GCF of 16 and 25: 1
yes... 16 is not a factor of 42 GCF is 2
Since 16 is not a factor of 42, the GCF in this case has to be less than 16.
The GCF is 2.
The GCF is 2.
It can be and is.
No.
It can be and is.
because 16 is not a factor of 42 and the GCF is 2.
The only rule is that the GCF has to be equal to or less than the lower number. Since 16 is not the GCF of 16 and 42, the GCF has to be lower than 16.
The GCF of 16, 24, 30, and 42 is 2.
Assuming you meant the GCF (greatest common factor). Yes - since the GCF of 16 & 42 is 2 !