835 is not a Prime number.
No, 120 and 835 are not relatively prime.
No.
no
15 is relatively prime.
Yes, they are relatively prime.
Yes, they are relatively prime.
Yes.
No
one, it is relativly prime. (:
As a product of its prime factors: 5*167 = 835
37 is a prime number but 42 is a composite number
No. They have 5 as a common factor.