Question

5 and are relatively prime numbers.

• A. 15
• B. 6
• C. 10

Answer 1

The correct option is B 6

We know that if two numbers are relatively prime numbers, they have no common factor other than 1.
Common factors between 5 and 15 are 1 and 5.
Common factors between 5 and 10 are 1 and 5.
But common factor between 5 and 6 is only 1.
So, 5 and 6 are relatively prime numbers.