Question

find the hcf of 2 , 15. can we say that they are co primes? Is it always true ?

Answer 1

Answer:

Yes,they are co-primes.

Step-by-step explanation:

$2 = 1 \times 2 \\ 5 = 1 \times 5$

The common factor between them is only 1. Therefore,HCF is 1.

Numbers whose HCF is 1 can be called as co-primes or relatively prime numbers

Answer 2

Answer:

HCF is 1 for 2 and 15. They are not mutually primes; they are coprimes. Two integers a or b are said to be comparatively prime, mutually prime, and coprime if the sole positive integer that divides them both is 1. A pair of coprime numbers' Highest Common Factor  is always 1. For instance, since the numbers 5 and 9 were coprime, 

HCF (5, 9) = 1. 

Step-by-step explanation:

For instance, since the numbers 5 and 9 were coprime,  The result of two coprimes always is their Least Common Multiple . For instance, the integers 5 and 9 were co-prime. The prime number is the number that only has itself and the number one as factors. However, CoPrime Numbers are only taken into account in pairs, and two Quantities are CoPrime if and only if they share a common factor of 1.

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