Yes. The only number that divides both evenly is 1.
The numbers 15, 32, and 49 are relatively prime because their greatest common factor is 1.
No, they are not relatively prime.
It can be. 21 is relatively prime with 32.
153
no
No.
Yes, 4 and 15 are relatively prime.
Yes, they are relatively prime.
Yes, they are relatively prime.
Yes, they are relatively prime.
A number cannot be "relatively prime" except in relation to another number. For example, 8 and 15 are relatively primebecause they contain no prime factors in common.
15 is not a prime number, so it can't be a prime factor.