Question

Find HCF of 378,180 and 420 by prime factorisation method. Is HCF x LCM of three numbers equal to the product of the three numbers?​

Answer 1

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378 = 2 x 33 x 7

180 = 22 x 32 x 5

420 = 22 x 3 x 5 x 7

∴ HCF (378, 180, 420) = 2 x 3 = 6.

No, HCF (p, q, r) x LCM (p, q, r) ≠ p x q x r. where p, q, r are positive integers.

Answer 2

Step-by-step explanation:

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