The GCD of given numbers is 1.
Step 1 : Place the numbers inside division bar:.
| 7961 | 3409 |
Step 2 : Number 7961 and 3409, cannot be both divided by any integer number, so the GCD is:
$$ GCD = 1 $$This solution can be visualized using a Venn diagram.
The GCD equals the product of the numbers at the intersection.