7 and 41 are both prime numbers
No, neither 27 nor 57 are prime numbers.
No.
Of course not! For example 3 and 9 are odd, but are not co-prime!
3 x 3 x 3 or 3^3 = 27
27 is not prime
10 and 21
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
29 is the next prime number after 27. But 27 is not a prime! 3 x 9 = 27!
No, 27 is not a prime number. 3x9 = 27
It can be. 27 is relatively prime to 28.
prime factor of 27 : 3factors of 27: 1, 3, 9, 27
27 and 31 are prime.