Ex 3.4, 5 (e) - Chapter 3 Class 6 Playing with Numbers

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Ex 3.4, 5 - Chapter 3 Class 6 Playing with Numbers - Part 5

Ex 3.4, 5 - Chapter 3 Class 6 Playing with Numbers - Part 6
Ex 3.4, 5 - Chapter 3 Class 6 Playing with Numbers - Part 7

Transcript

Ex 3.4, 5 Which of the following numbers are co-prime? (e) 216 and 215 Finding factors of 216 and 215 Factors of 216 1 × 216 = 216 2 × 108 = 216 3 × 72 = 216 4 × 54 = 216 6 × 36 = 216 8 × 27 = 216 9 × 24 = 216 12 × 18 = 216 18 × 12 = 216 We stop as 12 & 18 have occurred earlier Factors of 216 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 22, 27, 36, 54, 72, 108, 216 Factors of 215 1 × 215 = 215 5 × 43 = 215 43 × 5 = 215 We stop here as 5 & 43 have occurred earlier Factors at 215 are 1, 5, 43, 215 Since common factor is 1, They are co-prime numbers

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.