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Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42

Multiples of 14: 14, 28, 42

Multipled of 21: 21, 42

42 is lowest number common in all three hence LCM is 42.

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13y ago
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Q: What is the LCM for 3 14 and 21?
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