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The LCM of 20 and 128 is 640.
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Find least common multiple (LCM) of: 40 & 256 10 & 64 60 & 384 100 & 640 140 & 896 40 & 128 20 & 256 60 & 128 20 & 384 100 & 128 20 & 640 140 & 128 20 & 896
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