Question

Which of the following pairs of numbers are co-primes?

• A. 34 and 35
• B. 12 and 18
• C. 7 and 14
• D. 17 and 170

Answer 1

Answer:

A. 34 and 35

To determine if two numbers are coprime (or co-prime), find their greatest common factor (GCF or HCF). If the GCF is 1, the numbers are coprime. If the GCF is greater than 1, they are not coprime. 34 and 35