The GCD of given numbers is 42.
factors of 168 are : | 1 , 2 , 3 , 4 , 6 , 7 , 8 , 12 , 14 , 21 , 24 , 28 , 42 , 56 , 84 , 168 |
factors of 126 are : | 1 , 2 , 3 , 6 , 7 , 9 , 14 , 18 , 21 , 42 , 63 , 126 |
We see that the Greatest Common Factor = 42.
This solution can be visualized using a Venn diagram.
The GCD equals the product of the numbers at the intersection.