The GCD of given numbers is 5.
factors of 1235 are : | 1 , 5 , 13 , 19 , 65 , 95 , 247 , 1235 |
factors of 765 are : | 1 , 3 , 5 , 9 , 15 , 17 , 45 , 51 , 85 , 153 , 255 , 765 |
We see that the Greatest Common Factor = 5.
This solution can be visualized using a Venn diagram.
The GCD equals the product of the numbers at the intersection.