Co-prime numbers have a GCF of 1, that is, they don't share any common prime factors.
If your number is 15, with a prime factorization of 3 x 5, pick a number that doesn't include 3 or 5.
2 x 11 is 22
15 and 22 are co-prime.
No 5 is a prime number and 12 is composite number
No because 31 is a prime number but 62 is a composite number
No because 5 is a prime number whereas 6 is a composite number
Any two coprime numbers
To find a composite number, check if the number can be divided by 2,3,4,5, ect. If it can, it`s composite. If not, it`s prime.
Factor it. Once you find a third factor, it's composite.
3
No because they are both composite numbers having more than two factors
coprime numbers with 18 are : 17 and 19.
Since 25 and 27 are coprime, any third number - even if it shares a factor with one of these numbers - is bound to form a triplet whose HCF is 1.
No, since it has at least two more factors other than one and itself, it's by definition not prime. Any such number would always be composite.
Composite numbers have more than two factors. Once you find a third factor, you know your number is composite.