Ex 3.5, 1 Which of the following statements are true? (e) If two numbers are co-primes, at least one of them must be prime.Co-primes – Numbers with common factor 1 Prime number – Number with 2 factors 9 & 10 are co-prime numbers Factors of 9 are 1, 3, 9 Factors of 10 are 1, 2, 5, 10 But, neither 9 and 10 are prime numbers ∴ False

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.

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