It can be. 40 is relatively prime to 41. 40 is not relatively prime to 54.
It can be. 34 is relatively prime to 35. 34 is not relatively prime to 40.
No, 30 and 40 are not relatively prime. Their greatest common factor is 10.
ya they are relatively prime
One number, by itself cannot be relatively prime - or otherwise. Relative primality is a property of two (or more) numbers.
No, they can be both divided by 10
No, both of them can be divided by 10
No, because 5 divides both 40 and 135.
The numbers are not relatively prime, because they have a common factor of 2. To simplify, any pair is relatively prime, if their GCD is 1. In this case, GCD(38,40) = 2 which is not equal to 1, thus, they are not relatively prime.
Relatively prime numbers only have 1 as a common divisor. 38 and 40 have 1 and 2.