No, 50 and 65 are not relatively prime.
No, they are not relatively prime.
No, they are not relatively prime.
It can be. 21 is relatively prime with 32.
No.
Yes, they are relatively prime.
yes
No, 65 and 70 are not relatively prime. Relatively prime numbers only have the number 1 as a common factor. 65 and 70 also have 5 as a common factor, so they are not relatively prime.
153
no
No.
The GCF of 26 and 65 is 13. 13 is a prime number. "Relatively prime" refers to numbers whose GCF is 1.