Question

Which of the following pairs of number are co-prime ?
a) 30 , 415
b) 17 , 68
c) 16 , 81
d) 15 , 100​

Answer 1

Answer:

As they have no common factors, 15 and 37 are co-prime numbers. As they have a common factor 5, hence, 30 and 415 are not co-prime. As they have no common factors, 17 and 168 are coprime numbers.