Yes. 25 is 52, 36 is 22 * 32
They have no common factors
Yes, they are relatively prime.
25 is relatively prime with 36. 25 is not relatively prime with 35.
No.
no
15 is relatively prime.
Yes, they are relatively prime.
No
Yes.
one, it is relativly prime. (:
Yes
37 is a prime number but 42 is a composite number
No. They have 5 as a common factor.