Yes, they are relatively prime.
No, 120 and 835 are not relatively prime.
No. Two even numbers cannot be relatively prime.
No.
120 and 49
No, 3 is a factor of both. Note that the digits of 120 add up to 3 and those of 147 add up to 12. Both are multiples of 3 so the numbers 120 s and 147 are divisible by 3 and not relatively prime
The prime factors are: 5, 7 and 11 (5x7x11 = 385)
97
The Prime Factors of 385 are 5, 7, 11
As a product of its prime factors: 5*7*11 = 385
75,112
They are: 5*7*11 = 385