The greatest common factor of 39 and 156 is 39.
49 = 7 * 7 56 = 7 * 2 * 2 * 2 The common factor is 7 -- greatest or least is the same in this case. greatest common factor of 56 and 49 is 7. 56 = 7 * 2 * 2 * 2 49 = 7 * 7 7 56 / 49 = 1 r 7 49 / 7 = 7 r 0
The GCF is 1.
The GCF is 1.
The GCF is 7.
The greatest common factor of 9821 , 56 = 7
The Greatest Common Factor of 175 and 56 is 7.
The greatest common factor of 18 and 56 is 2.
The greatest common factor of 14 and 56 is 14.
The greatest common factor of 56 and 81 is 1.
The greatest common factor of 21 and 56 is 7.
The greatest common factor of 161 and 105 is the same as the greatest common factor of 105 and 56. I obtained the number 56 by subtracting 161 - 151. Continue like this, until you get one number that is an exact multiple of the other. The next step is, 105 - 56 = 49, so you have to calculate the gcf of 56 and 49. This method is known as Euclid's Algorithm.