Short Answer Type
Long Answer TypeShort Answer Type
and 20 = 2 × 2 × 5
∴ LCM = Product of each prime factor with highest powers
= 22 × 3 × 5 = 60
i.e., LCM (6,20) = 60
HCF = Product of common prime factors with lowest powers = 2
i.e., H.C.F. (6, 20) = 2.
Long Answer TypeShort Answer TypeFind the LCM and HCF of the following integers by applying the prime factorisation method :
12, 15 and 21
Long Answer TypeUsing prime factorization method, Find the LCM of
(i) 12, 15, 20, 27 (ii) 21, 28, 36, 45.
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