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The LCM of 72 and 21 is 504.
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Find least common multiple (LCM) of: 144 & 42 216 & 63 24 & 7 360 & 105 504 & 147 144 & 21 72 & 42 216 & 21 72 & 63 360 & 21 72 & 105 504 & 21 72 & 147
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