The GCD of given numbers is 2.
| factors of 424 are : | 1 , 2 , 4 , 8 , 53 , 106 , 212 , 424 |
| factors of 82 are : | 1 , 2 , 41 , 82 |
We see that the Greatest Common Factor = 2.
This solution can be visualized using a Venn diagram.
The GCD equals the product of the numbers at the intersection.