Yes they are.
Yes.
770 is not prime; however, it can be written as a productof primes:770 = 2*5*7*11.
770 = 2 x 5 x 7 x 11
201 3,67
Yes they are.
No, they are not relatively prime.
No.
Yes.
No.
No, they are both divisible by 7. 49/7=7 770/7=110
26 and 99 is the only pair which is relatively prime.
An easy way to find a number relatively prime to another number is to find a nearby prime number. For example, 53 is relatively prime with 50. The following pairs are relatively prime. 3, 50 19, 50 37, 50 49, 50 50, 69 50, 201 50, 341 Any number that is not divisible by 2 or 5 will be relatively prime to 50.
770 is not prime; however, it can be written as a productof primes:770 = 2*5*7*11.
201 is divisible by 3 and 67 so it is composite, not prime
There are no prime numbers between 201 and 300.
201 is a composite number