The GCD of given numbers is 5.
Step 1 : Place the numbers inside division bar:.
| 30 | 35 |
Step 2 : Divide numbers by 5.
| 5 | 30 | 35 |
| 6 | 7 |
Step 3 : Number 6 and 7, cannot be divided any more. The GCD is:
$$ GCD = 5 $$This solution can be visualized using a Venn diagram.
The GCD equals the product of the numbers at the intersection.