Question

5. What are co-primes? Are co-primes always prime numbers? If not then illustrate your
answer by an example.​

Answer 1

No, co-prime numbers need not be prime. They can both be composite. For example, 20 and 27 are co-prime, because the highest common factor is 1, but both numbers are composite.

Answer 2

Answer:

Two integers a and b are said to be co-primes if the only positive integer that divides both of them is 1.

Step-by-step explanation:

No, co-primes need not to be always prime numbers. For example, 4/3

Here 4 and 3 have the only common factor 1.So they are co-primes.

3 is a prime number but 4 is not a prime number. Hence co-primes are not always prime numbers