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  1. Chapter 3 Class 6 Playing with Numbers
  2. Serial order wise
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Ex 3.1, 3 Match the items in column 1 with the items in column 2. Multiples of 8 are 8, 16, 24, 32, 40, 48…. Multiples of 7 are 7, 14, 21, 28, 35, 42…. Multiples of 70 are 70, 140, 210, 280, 350, 420…. Factors of 30 are 1 × 30 = 30 2 × 15 = 30 3 × 10 = 30 4 × 5 × 6 = 30 6 × 5 = 30 We stop here as 5 & 6 have occurred earlier. ∴ Factors of 30 are 1, 2, 3, 5, 6, 10, 15, 30 Factors of 50 are 1 × 50 = 50 2 × 25 = 50 3 × 4 × 5 × 10 = 50 … 10 × 5 = 50 We stop here as 10 & 5 have occurred earlier. ∴ Factors of 50 are 1, 2, 5, 10, 25, 50 Factors of 20 are 1 × 20 = 20 2 × 10 = 20 3 × 4 × 5 = 20 5 × 4 = 20 We stop here as 5 & 4 have occurred earlier. ∴ Factors of 20 are 1, 2, 4, 5, 10, 20 Multiples of 8 are 8, 16, 24, 32, 40, 48…. Multiples of 7 are 7, 14, 21, 28, 35, 42…. Multiples of 70 are 70, 140, 210, 280, 350, 420…. Factors of 30 are 1, 2, 3, 5, 6, 10, 15, 30 Factors of 50 are 1, 2, 5, 10, 25, 50 Factors of 20 are 1, 2, 4, 5, 10, 20

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.