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The LCM of 6 and 640 is 1920.
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Find least common multiple (LCM) of: 12 & 1280 3 & 320 18 & 1920 30 & 3200 42 & 4480 12 & 640 6 & 1280 18 & 640 6 & 1920 30 & 640 6 & 3200 42 & 640 6 & 4480
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