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The LCM of 20 and 400 is 400.
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Find least common multiple (LCM) of: 40 & 800 10 & 200 60 & 1200 100 & 2000 4 & 80 140 & 2800 40 & 400 20 & 800 60 & 400 20 & 1200 100 & 400 20 & 2000 140 & 400 20 & 2800
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