Yes, they are relatively prime.
No, 54 and 165 are not relatively prime.
Yes, 33 and 56 are relatively prime.
yes, they are relatively prime.
No, 56 is not prime.
No
no
No, 144 and 165 are not relatively prime. For them to be relatively prime, the number 1 could be their only common factor, but they also have 3 as a common factor.
The GCF is 33, which means they are not relatively prime.
Since the GCF of 45 and 56 is 1, they are relatively prime.
No.
No, they are not.