Question

odd composite number.
12. What are twin primes? Write all the pairs of twin primes between 50 and 100.
13. What are co-primes? Give examples of five pairs of co-primes. Are co-primes alwa
primes? If no, illustrate your answer by an example.​

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

Step-by-step explanation:

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Answer 2

12.twin prime..

either less 2 and mire than 2

59 ,61 or 71,73 are twin prime between 5...

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