Question

What are co-primes? Give example of five pairs of co-prime.Are co-primes always primes? if no, illustrate your answer by an example
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Answer 1

Answer:

⇒ Two integers a and b are said to be relatively prime, mutually prime, or coprime (also written co-prime) if the only positive integer (factor) that divides both of them is 1. ... A set of integers can also be called coprime

⇒ Pairs of co-prime are: 2,3;3,4;4,5;5,6;6,7.  

⇒ No, 15,16 are co-prime but none of them is prime

Step-by-step explanation:

Answer 2

3and4, 4and9 , 8and15 , 21and25

Step-by-step explanation:

Two number are said to be co-prime if they have only 1 as their common factor.