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Ex 1.2, 3  - Find the LCM and HCF of following integers - LCM/HCF


  1. Class 10
  2. Important Questions for Exam - Class 10
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Ex 1.2 , 3 (Method 1) Find the LCM and HCF of the following integers by applying the prime factorisation method. 12, 15 and 21 Ex 1.2 , 3 (Method 2) Find the LCM and HCF of the following integers by applying the prime factorisation method. 12, 15 and 21 Finding L.C.M Ex 1.2 , 3 (Method 1) Find the LCM and HCF of the following integers by applying the prime factorisation method. (ii) 17, 23 and 29 Ex 1.2 , 3 (Method 2) Find the LCM and HCF of the following integers by applying the prime factorisation method. (ii) 17, 23 and 29 Finding L.C.M Ex 1.2 , 3 (Method 1) Find the LCM and HCF of the following integers by applying the prime factorisation method. (iii) 8, 9 and 25 H.C.F = Product of smallest power of each common prime factor = 1 L.C.M = Product of greatest power of each prime factor = 23 × 32 × 52 = 8 × 9 × 25 = 1800 Ex 1.2 , 3 (Method 2) Find the LCM and HCF of the following integers by applying the prime factorisation method. (iii) 8, 9 and 25 H.C.F = 1 Finding L.C.M L.C.M = 2 × 2 × 2 × 3 × 3 × 5 × 5 = 8 × 9 × 25 = 1800

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