No.
No, 50 and 65 are not relatively prime.
No, they are not relatively prime.
No, 30 and 135 are not relatively prime.
Yes, they are relatively prime.
Yes, 25 and 65 are relatively prime because their greatest common divisor (GCD) is 1. The prime factorization of 25 is (5^2), and for 65, it is (5 \times 13). Since they share a common factor of 5, they are not relatively prime.
yes
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.
The GCF of 26 and 65 is 13. 13 is a prime number. "Relatively prime" refers to numbers whose GCF is 1.
Yes. hcf(65, 112) = 1.
No, 30 and 36 are not relatively prime. They share the factors 3 and 6.
No, 30 and 40 are not relatively prime. Their greatest common factor is 10.