Question
Find Greatest Common Divisor of 780 and 224, using repeated division.
Answer
The GCD of given numbers is 4.
Explanation
Step 1 : Place the numbers inside division bar:.
| 780 | 224 |
Step 2 : Divide numbers by 2.
| 2 | 780 | 224 |
| 390 | 112 |
Step 3 : Divide numbers by 2.
| 2 | 780 | 224 |
| 2 | 390 | 112 |
| 195 | 56 |
Step 4 : Number 195 and 56, cannot be divided any more. The GCD is:
This solution can be visualized using a Venn diagram.
0,0
780
224
2
2
3
5
13
2
2
2
7
The GCD equals the product of the numbers at the intersection.
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