no...5 is but not 15
Yes, 4 and 15 are relatively prime.
Yes, they 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.
No!
No.
15 is relatively prime.
Yes, they are.
No.
The numbers 15, 32, and 49 are relatively prime because their greatest common factor is 1.