Find the L.C.M of the following by prime factorization
[i] - 42, 63 , 162
[ many questions are there related to this but not that step to step - pls explain ]
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Explanation
Prime factors of 42 - 2 × 3 × 7
Prime factors of 63 - 3 × 3 × 7
Prime factors of 162- 2 × 3 × 3 × 3 × 3
Common Factors - 3×3×7×2×2×3×3×3
LCM = 6104
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