Question
Find Greatest Common Divisor of 2, 6, 12, 20 and 30, by listing out the factors.
Answer
The GCD of given numbers is 2.
Explanation
| factors of 2 are : | 1 , 2 |
| factors of 6 are : | 1 , 2 , 3 , 6 |
| factors of 12 are : | 1 , 2 , 3 , 4 , 6 , 12 |
| factors of 20 are : | 1 , 2 , 4 , 5 , 10 , 20 |
| factors of 30 are : | 1 , 2 , 3 , 5 , 6 , 10 , 15 , 30 |
We see that the Greatest Common Factor = 2.
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