Best Answer

An HCF is the product of any common prime factors of two numbers. If two numbers have no common prime factors, then the HCF will be 1.

For example, 10 and 21. The prime factors are 2x5 and 3x7. There is nothing in common, and so the HCF of 10 and 21 is 1.

Two consecutive numbers will always have the HCF of 1.

User Avatar

Wiki User

โˆ™ 2012-02-25 22:57:45
This answer is:
User Avatar
Study guides


20 cards

A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

See all cards
1481 Reviews

Add your answer:

Earn +20 pts
Q: What numbers have an HCF of 1?
Write your answer...
Still have questions?
magnify glass
People also asked