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The LCM of 3 and 3 is 3.
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Find least common multiple (LCM) of: 6 & 6 9 & 9 1 & 1 15 & 15 21 & 21 6 & 3 3 & 6 9 & 3 3 & 9 15 & 3 3 & 15 21 & 3 3 & 21
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