Question

find the hcf of any two prime numbers

Answer 1

Answer:

The HCF of two coprime numbers is always 1 . For example: 5 and 9 are coprime numbers and hence, HCF (5,9)=1 ( 5 , 9 ) = 1 .

Answer 2

Answer:

the highest common factor (HCF) of two numbers is equal to 1, then they are called co-prime or relatively prime. HCF of co-prime numbers 4 and 15 was found as follows by factorisation: 4 = 2 × 2 and 15 = 3 × 5; Since there is no common prime factor, so HCF of 4 and 15 is 1.