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Question

LCM of 12,18,20


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Solution

Use prime factorization method

12=2×2×3=22×318=3×3×2=32×220=2×2×5=22×5

LCM of 12,18,20 can be calculated by multiplying the highest power of the prime numbers.

LCM of 12,18,20 = 22×32×5=180

Therefore, LCM of 12,18,20 is 180.


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