Question

select the coprime numbers from the following pairs of numbers
(a)7and14
(b)18and17
(c)36and25
(d)35and21​

Answer 1

Answer:

Options b

18,17

Are coprime number

Answer 2

Answer:

b and c are the pairs of co primes

Step-by-step explanation:

7 and 14 have a common factor 7 which is their HCF.

18 and 17 have no common factor except 1 which is their HCF.

36 and 25 have no common factor except 1 which is their HCF

35 and 21 have common factor 7 which is their HCF.

as we know that the two numbers having their HCF is 1 are co- primes or relatively primes,

therefore (18,17) and (36,25) are co-primes.