Question

Question 5 (a)

Which of the following numbers are co-prime:
18 and 35

Answer 1

Two numbers having only 1 as a common factor are called co-prime numbers.
Factors of 18 = 1, 2, 3, 6, 9, 18
Factors of 35 = 1, 5, 7, 35
Common factor = 1
Since, both have only one common factor i.e. 1, therefore, they are co-prime numbers.