The GCD of given numbers is 200.
factors of 1000 are : | 1 , 2 , 4 , 5 , 8 , 10 , 20 , 25 , 40 , 50 , 100 , 125 , 200 , 250 , 500 , 1000 |
factors of 400 are : | 1 , 2 , 4 , 5 , 8 , 10 , 16 , 20 , 25 , 40 , 50 , 80 , 100 , 200 , 400 |
We see that the Greatest Common Factor = 200.
This solution can be visualized using a Venn diagram.
The GCD equals the product of the numbers at the intersection.