Yes, they are relatively prime.
It can be. 50 is relatively prime to 51.
No.
No.
No.
No
52
Yes.
Yes.
Yes. 11 is prime. 98 is not prime, but it is not divisible by 11, so the two are relatively prime.
No, they are not relatively prime.
11 is a prime number. For it to be relatively prime, it needs to be compared to another integer.