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Find the HCF of 378 ,180,and …

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Find the HCF of 378 ,180,and 420 by prime factorisation method

Posted by Shivi Rajput 5 years, 1 month ago

CBSE > Class 10 > Mathematics

3 answers

King Adithya H M... 5 years ago

HCF is 6 and LCM is 3780

0Thank You

Shambhu Shinde 5 years, 1 month ago

Prime factors of 378=2*3*3*3*7 Prime factors of 180=2*2*3*3*5 Prime factors of 420=2*2*3*5*7 So, hcf of 378,180,420 is 2*3=6 LCM of 348,180,420 is 2*2*3*3*3*5*7=3780

0Thank You

Gaurav Seth 5 years, 1 month ago

A n s w e r

Prime factors of 378 = 2 × 3 × 3 × 3 × 7
Prime factors of 180 = 2 × 2 × 3 × 3 × 5
Prime factors of 420 = 2 × 2 × 3 × 5 × 7
So, HCF of 378, 180 and 420 is 2 × 3 = 6
And LCM of 378, 180 and 420 is 2 × 2 × 3 × 3 × 3 × 5 × 7 = 3780

3Thank You

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