answersLogoWhite

0

If the GCF of two numbers is 1 then the numbers are co-prime or a pair of numbers which have only 1 as their common factoris called co-prime.

Let us check if 15 and 42 share any common factors other than 1.

Factors of 15: 1, 3, 5 and 15.

Factors of 42: 1, 2, 3, 6, 7, 21 and 42.

As it can be seen that 3 is a common factor or GCF of 15 and 42.

So, 15 and 42 are not co-prime.

User Avatar

Wiki User

12y ago

Still curious? Ask our experts.

Chat with our AI personalities

FranFran
I've made my fair share of mistakes, and if I can help you avoid a few, I'd sure like to try.
Chat with Fran
RossRoss
Every question is just a happy little opportunity.
Chat with Ross
ProfessorProfessor
I will give you the most educated answer.
Chat with Professor

Add your answer:

Earn +20 pts
Q: Are 15 and 42 co-prime
Write your answer...
Submit
Still have questions?
magnify glass
imp