55 and 72 are relatively prime because they have no prime factors in common.
No.
Yes
Any odd prime number.
No. Both 18 and 33 can be divided by 3, which means that they are not relatively prime.(TIP When someone asks you if the numbers are relatively prime think of a number that both numbers can be divided by to get a whole number. With that you should be able too see strait away which numbersare relatively prime.)(Relatively prime means any amount of numbers that can only be divided by 1 and themselves )Hope I helped! :) XD
No, they are not relatively prime.
Yes, 55 and 62 are relatively prime because they have no common factor greater than 1.
Yes
All odd numbers that can not be divided by 3 evenly would be relatively prime with 18.
No, they are not.
no
Yes, they are. 5 is the only prime factor of 25 and 5 is not a factor of 18, so they have no prime factors in common, which is what relatively prime means.
Yes.
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.
no because it is just not