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The LCM of 20 and 136 is 680.
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Find least common multiple (LCM) of: 40 & 272 10 & 68 60 & 408 100 & 680 140 & 952 40 & 136 20 & 272 60 & 136 20 & 408 100 & 136 20 & 680 140 & 136 20 & 952
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