Question

find the LCM of the following by prime factorization method: 18, 20, 30​

Answer 1

LCM of 18 and 30 can be obtained by multiplying prime factors raised to their respective highest power, i.e. 21 × 32 × 51 = 90. Hence, the LCM of 18 and 30 by prime factorization is 90.

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Answer 2

LCM= 2×2×3×3×5×2

=360

Hence, LCM will be 360