All odd numbers that can not be divided by 3 evenly would be relatively prime with 18.
Yes, e.g. 3 and 5 are relatively prime, 27 (33) and 25 (52) are relatively prime...
Yes
No.
Lots of numbers are. To be relatively prime, they would have to have only the number 1 as a common factor. So any number that has any of 2, 3, 6, 9 or 18 as factors are not relative prime to 18. So numbers such as 5, 7, 11, 13 and 17 are relatively prime with 18.
4, 18
25 is relatively prime with 36. 25 is not relatively prime with 35.
Yes, they are relatively prime.
It can be. 16 is relatively prime with 25.
no
Relatively prime, yes.
25 and 98 are not prime numbers
All odd numbers that can not be divided by 3 evenly would be relatively prime with 18.
26
No.
No.
No, they are not.