Question

Find HCF and LCM of following by prime factorization method :
(i) 15 and 12
(ii) 18 and 45
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Answer 1

Answer:

HCF of 15 and 12 is 60

HCF of 18 and 45 is 90

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Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

(i) Given: 15, 12  

12 = 2 x 2 x 3

15 = 3 x 5

HCF = 3

LCM = 60

(ii) Given: 18, 45

18 = 2 × 3 × 3

45 = 3 × 3 × 5

HCF = 9

LCM = 90

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