Question

13. What are co-primes? Give examples of five pairs of co-primes. Are co-primes always
primes? If no, illustrate your answer by an example.​

Answer 1

Pairs are: ( 2, 3 ), ( 3, 4 ), ( 4, 5 ), ( 5, 6 ), ( 6, 7 ) .

Now, we have to state that, are co-primes always prime?

So, its answer is NO.

We can illustrate this by taking a pair of 14 and 15 as an example.

Answer 2

Answer:

Pairs are: ( 2, 3 ), ( 3, 4 ), ( 4, 5 ), ( 5, 6 ), ( 6, 7 ) . Now, we have to state that, are co-primes always prime? So, its answer is NO. We can illustrate this by taking a pair of 14 and 15 as an example.