Yes.
No, they are not relatively prime.
It can be. 26 is relatively prime to 27. 26 is not relatively prime to 34.
It can be. 27 is relatively prime to 28.
No. they are not
hcf(10, 21) = 1 ⇒ 10 & 21 relatively prime hcf(12, 54) = 6 ⇒ 12 & 54 not relatively prime hcf(15, 27) = 3 ⇒ 15 & 27 not relatively prime hcf(21, 38) = 1 ⇒ 21 & 38 relatively prime
No, they are not relatively prime.
27 and 31 are prime.
Yes, they are relatively prime.
It can be. 26 is relatively prime to 27. 26 is not relatively prime to 34.
It can be. 27 is relatively prime to 28.
14 = 2 × 7 27 = 3³ → hcf(14, 27) = 1 → 14 and 27 are relatively prime.
Yes! Ten and Twenty-seven are relatively prime.
No. they are not
Yes.
Yes, e.g. 3 and 5 are relatively prime, 27 (33) and 25 (52) are relatively prime...
Yes.
No.