Yes, they are relatively prime.
Yes, they are relatively prime.
It can be. 27 is relatively prime to 28.
No combination of non-zero even numbers can be relatively prime.
No.
Yes, 15 and 21 are relatively prime because they have no common positive factors other than 1. The prime factorization of 15 is 3 and 5, while the prime factorization of 21 is 3 and 7. The only common factor is 3, which means they are not relatively prime.
No, 28 and 34 are not relatively prime. No pair of even numbers can be relatively prime, as they always share at least one factor (2).
Yes, 4 and 15 are relatively prime.
Yes, they are relatively prime.
Yes, they are relatively prime.
15 is not a prime number, so it can't be a prime factor.
No they are not.
No, they are not.
No. Even numbers can't be relatively prime to each other.
It can be. 27 is relatively prime to 28.
No combination of non-zero even numbers can be relatively prime.
No.
No!