Question

Which of the following number are co-prime : a) 18 and 35 b) 15 and 37 c) 30 and 415 d) 17 and 68 e) 216 and 215 f) 81 and 16. ​

Answer 1

Answer:

a) Yes

b) Yes

c) No

d) Yes

e) Yes

f) Yes

Step-by-step explanation:

a) 18 and 35  have no common factors, Therefore, 18 and 35 are coprime numbers.

b) As they have no common factors, 15 and 37 are co-prime numbers.

c) As they have a common factor 5, hence, 30 and 415  are not co-prime.

d) As they have no common factors, 17 and 168 are coprime numbers.

e) As they have no common factors, 216 and 215 are coprime numbers.

f) As they have no common factors, they are co-prime numbers.

Hope this helps

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