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The LCM of 20 and 3 is 60.
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Find least common multiple (LCM) of: 40 & 6 60 & 9 100 & 15 140 & 21 40 & 3 20 & 6 60 & 3 20 & 9 100 & 3 20 & 15 140 & 3 20 & 21
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