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The LCM of 21 and 36 is 252.
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Find least common multiple (LCM) of: 42 & 72 63 & 108 7 & 12 105 & 180 147 & 252 42 & 36 21 & 72 63 & 36 21 & 108 105 & 36 21 & 180 147 & 36 21 & 252
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