The GCF is 7.
28 = 2 x 2 x 7 42 = 2 x 3 x 7 GCF = 2 x 7 = 14
3 and 42 6 and 21
7
If the GCF of two numbers p and q is 7, then the GCF of p2 and q2 is 14.
You need at least two numbers to find a GCF.
7
We know the gcf x LCM= AB where A and B are the two numbers. So the product of the two number we seek is 196 7 and 28 have a product of 196 and the gcf of 7 and 28 is 7. The LCM of 28 and 7 is 28. So the two numbers are 7 and 28. ( I started out by dividing 196 by 7 to get the 28)
The first two are prime so their hcf, and that of all three numbers, is 1.
7
HCF is the highest common factor of two or more numbers. HCF of 56 and 49 is 7.
It is not possible to give a sensible answer to this question. The highest common factor (HCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question!
There are six sevens in forty-two. This is because when you divide 42 by 7, the result is 6. So, 42 can be expressed as 7 multiplied by 6.