Question

find if the numbers are coprime ​

Answer 1

Answer:

Co - primes are

30 and 31

27 and 57

Answer 2

(a.)

15 = 3×5×1

18 = 3×6×1

15,18 are Not co-prime.As they have a common factor 3 that is other than 1...

(b.)

30= 2×3×5×1

31 = 31×1

Co-prime numbers are those numbers that has a common factor as 1,only. Therefore, 30 & 31 are co-prime..

(c.)

27= 3×3×3×1

57= 3×19×1

They have a common factor of 3; other than 1.