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.
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Answer 1

Answer:

Two numbers are said to be co-prime if they do not have a common factor other than 1. 2, 3; 3, 4; 4, 5; 5, 6; 6, 7 are the examples of five pairs of co-primes. No. 15, 16 are co-prime but both of the numbers are not prime.

Answer 2

Write 5 pairs of co-primes? Two numbers are said to be coprime if they have no common factor other than 1. (3, 5), (7, 9), (10, 13), (15, 16), (17, 19) are some pairs of coprime numbers.

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