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The LCM of 4 and 1920 is 1920.
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Find least common multiple (LCM) of: 8 & 3840 2 & 960 12 & 5760 20 & 9600 8 & 1920 4 & 3840 12 & 1920 4 & 5760 20 & 1920 4 & 9600 28 & 1920
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