Question

Which of the following is a pair of co-primes? 42,20 27,72 35,37

Answer 1

Answer:

35 and 37

Step-by-step explanation:

42 and 20 are not coprime (relatively, mutually prime) - if they have common prime factors, that is, if their greatest (highest) common factor (divisor), gcf, hcf, gcd, is not 1.

27 and 72 are not coprime (relatively, mutually prime) - if they have common prime factors, that is, if their greatest (highest) common factor (divisor), gcf, hcf, gcd, is not 1.

but,37 and 35 are coprime (relatively, mutually prime) - if they have no common prime factors, that is, if their greatest (highest) common factor (divisor), gcf, hcf, gcd, is 1.

so,37,35 is the answer

Answer 2

Answer:

37 and 35 are co-prime