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What is the Greatest Common Divisor of 2 and 21?


The Greatest Common Divisor of 2 and 21 is as follows:

1

To find the Greatest Common Divisor of 2 and 21, we first list all the divisors of 2 and all the divisors of 21. Then, we compare the two lists of divisors and pick the largest (greatest) number that is on both lists, which will be the Greatest Common Divisor of 2 and 21.

Here is the list of 2 divisors: 1, 2

And here is the list of 21 divisors: 1, 3, 7, 21

When we compare the two lists, we see that the greatest number they have in common is 1.

Therefore, once again, the answer to the question "What is the Greatest Common Divisor of 2 and 21?" is:

1

Note, the divisors of 2 are all the numbers you can divide into 2 with no remainder, and the divisors of 21 are all the numbers you can divide into 21 with no remainder.





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What is the Greatest Common Divisor of 2 and 22?
The Greatest Common Divisor of 2 and 21 is not the only problem we solved. Go here for the next Greatest Common Divisor on our list that we have the answer to.


 


 


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