Ex 3.4, 2 - Find common factors of (a) 4, 8 and 12 (b) 5, 15 and 25

 

 

 

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Ex 3.4, 2 Find the common factors of : (a) 4, 8 and 12 We find factors of 4, 8 and 12 separately So, common factors are 1, 2, 4 Factors of 4 1 × 4 = 4 2 × 2 = 4 4 × 1 = 4 We stop here as 1 & 4 have occurred earlier So factors of 4 are 1, 2, 4 Factors of 8 1 × 8 = 8 2 × 4 = 8 4 × 2 = 8 We stop here as 2 & 4 have occurred earlier So factors of 8 are 1, 2, 4, 8 Factors of 12 1 × 12 = 12 2 × 6 = 12 3 × 4 = 12 4 × 3 = 12 We stop here as 4 and 3 have occurred earlier So factors of 12 are 1, 2, 3, 4, 6, 12

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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.