Question

Question 5 (d)

Which of the following numbers are co-prime:
17 and 68

Answer 1

Two numbers having only 1 as a common factor are called co-prime numbers.
Factors of 17 = 1, 17
Factors of 68 = 1, 2, 4, 17, 34, 86
Common factor = 1, 17
Since, both have more than one common factor, therefore, they are not co-prime numbers.