Question

identify which of the following pairs are co-primes and which are twin prime
a. 5 and 7 b. 11 and 13 c. 15 and 17 d. 41 and 43 e. 49 and 51​

Answer 1

Answer:

A Co-prime number is a set of numbers or integers which have only 1 as their common factor i.e. their highest common factor (HCF) will be 1.

a twin prime is a prime that has a prime gap of two numbers.

5 and 7 are twin prime

11 and 13 are twin prime

15 and 17 are co-prime

41 and 43 are twin prime

49 and 51 are co-prime.