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InterviewSolution
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Find the HCF of 378 ,180,and 420 by prime factorisation method |
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Answer» HCF is 6 and LCM is 3780 Prime factors of 378=2*3*3*3*7Prime factors of 180=2*2*3*3*5Prime factors of 420=2*2*3*5*7So, hcf of 378,180,420 is 2*3=6LCM of 348,180,420 is 2*2*3*3*3*5*7=3780 A n s w e rPrime factors of 378 = 2\xa0× 3\xa0× 3\xa0× 3\xa0× 7Prime factors of 180 = 2\xa0× 2\xa0× 3\xa0× 3\xa0× 5Prime factors of 420 = 2\xa0× 2\xa0× 3\xa0× 5\xa0× 7So, HCF of 378, 180 and 420 is 2\xa0× 3 = 6And LCM of 378, 180 and 420 is 2\xa0× 2\xa0× 3\xa0× 3\xa0× 3\xa0× 5\xa0× 7 = 3780 |
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