No. 2 divides them both, for example.
yes, they are relatively prime.
No, they are not relatively prime.
Yes, they are relatively prime.
No, they are not relatively prime.
No, they are not relatively prime.
Yes, they are relatively prime.
No, their common factors are 1 and 11. As 1 is not their only common factor, then they are not relatively prime.
No, they both share 2 as a factor.
No combinations of even numbers can be relatively prime.
No.
Yes, 3 and 20 are relatively prime because they have no common factor greater than 1.
No, their common factors are 1 and 11. As 1 is not their only common factor, then they are not relatively prime.