Question

Idenytify the numbers which are co-primes to the first number in the row. 85, 70, 17, 51, 16, 21, 34

Answer 1

Answer:

17 only

Step-by-step explanation:

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Answer 2

Answer:

here we will find the solution by taking out HCF like first of 85 and 70 HCF is 5 so they are not co primes then we will take out of 85 and 17 the HCF is 1 so 85 and 17 coprimes....(The prime factorization of 85 is: 5 x 17.

The prime factorization of 51 is: 3 x 17.

The prime factors and multiplicities 85 and 51 have in common are: 17.

17 is the hcf of 85 and 51.

hcf(85,51) = 17.) so 85 & 51 are also not coprimes ... HCF of 85 and 16 is 1 so there coprime... HCF of 85 and 21 is also one they are also co primes... HCF of 85 and 34 is 17 so they are not coprime...

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