Question

Two numbers are said to be coprime numbers if their HCF is___

A) 2. B) 3. C) 0. D) 1​

Answer 1

D) 1

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Answer 2

The HCF of two coprime numbers is always 1. For example, 5 and 9 are coprime numbers, and hence, HCF (5, 9)=1. The LCM of two coprime numbers is always their product.

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Properties of Coprime Numbers.

Numbers 14 15

Factors 1,2,7,14 1,3,5,15

Common Factor 1