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The LCM of 420 and 480 is 3360.
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Find least common multiple (LCM) of: 840 & 960 210 & 240 1260 & 1440 140 & 160 2100 & 2400 84 & 96 2940 & 3360 840 & 480 420 & 960 1260 & 480 420 & 1440 2100 & 480 420 & 2400 2940 & 480 420 & 3360
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