Find Greatest Common Divisor of 40, 30, 23, 16, 4 and 20, by listing out the factors.
Answer
The GCD of given numbers is 1.
Explanation
| factors of 40 are : | 1 , 2 , 4 , 5 , 8 , 10 , 20 , 40 |
| factors of 30 are : | 1 , 2 , 3 , 5 , 6 , 10 , 15 , 30 |
| factors of 23 are : | 1 , 23 |
| factors of 16 are : | 1 , 2 , 4 , 8 , 16 |
| factors of 4 are : | 1 , 2 , 4 |
| factors of 20 are : | 1 , 2 , 4 , 5 , 10 , 20 |
We see that the Greatest Common Factor = 1.
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