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Find the LCM of 16 90 91 280 455 |
Answer» Given:Numbers: 16, 90, 91, 280 & 455 To find:L.C.M. of the numbers Solution:(i) We will find the L.C.M. of the numbers 16, 90, 91, 280 & 455 by the prime factorization METHOD. (ii) Let's FIRST WRITE the factors of each number 16 = 2 × 2 × 2 × 2 90 = 2 × 3 × 3 × 5 91 = 7 × 13 280 = 2 × 2 × 2 × 5 × 7 455 = 5 × 7 × 13 (iii) Now, we will take the least common factors of the numbers L.C.M (16, 90, 91, 280 & 455) = 2⁴ × 3² × 5 × 7 × 13 = 65,520 Thus, --------------------------------------------------------------------------------------- Also View:Find the LCM ofi) 12, 18, 24 and 36 ii) 39, 65 and 130 iii) 20, 35, 15, and 45 iv) 45, 60, 90 v) 28, 35, 42 vi) 6, 10, 20 and 30 10. Find the HCF of i) 120 and 288 ii) 125, 200 and 250 iii) 5, 168, 140 and 252 iv) 950, 75, 105 v) 48, 72, 60 vi) 770, 1078 and 924 first answer LCM THEN HCF LCM of 56 65 and 85 What is the LCM of 39 , 52 , 65 |
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