Question 5 - Page 120 - Prime Factorisation - Chapter 5 Class 6 - Prime Time (Ganita Prakash)

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[Class 6] What is the smallest number whose prime factorisation has: - Prime Factorisation

part 2 - Question 5 - Page 120 - Prime Factorisation - Chapter 5 Class 6 - Prime Time (Ganita Prakash) - Class 6 (Ganit Prakash)

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Question 5 - Page 120 What is the smallest number whose prime factorisation has: a. three different prime numbers? b. four different prime numbers?Prime numbers from smallest to largest are 2, 3, 5, 7, 11, 13, 17, …. Smallest number using 3 smallest prime numbers Three smallest prime numbers are 2, 3, 5 ∴ Smallest number = 2 × 3 × 5 = 30 Smallest number using 4 smallest prime numbers Four smallest prime numbers are 2, 3, 5, 7 ∴ Smallest number = 2 × 3 × 5 × 7 = 210

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 15 years. He provides courses for Maths, Science and Computer Science at Teachoo