Yes, 13 and 17 are relatively prime.
As 13 is prime and is not a factor of 24, then they are relatively prime
13 and 4 are relatively prime.
13 and 24 are relatively prime.
No, they are not relatively prime.
17 and 68 are not relatively prime because they have 17 as a common factor.
No, 13 and 39 are not relatively prime. 13 is a factor of 39.
Yes, they are relatively prime.
Yes, they are relatively prime.
To be relatively prime requires another number, and the highest common factor between 17 and that number must be 1. 17 is relatively prime to all numbers which are not multiples of 17 (since 17 is a prime number).
Yes, they are relatively prime.
Yes, they are relatively prime.
It can be. Since 13 is a prime number, it is relatively prime to all other numbers except for multiples of 13.