Which pair of numbers is relatively prime? A. 108 and 57 B. 21 and 183 C. 55 and 121 D. 60 and 151

Answer:60 and 151Step-by-step explanation:Relatively Prime numbers:Two integers are relatively prime (or co-prime) if there is no integer greater than one that divides them both (that is, their greatest common divisor is one). For example, 12 and 11 are relatively prime.But 12 and 18 are not relatively prime.a) 108 and 57They are not relatively prime because they have a common factor 3.b) 21 and 183They are not relatively prime because they have a common factor 3.c) 60 and 151There are no shared common factor other than 1, hence, they are co-prime.