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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the answer is 42 14*2=42 14*3=42
42 because 21 times 2 is 42 and 14 times 3 is 42
Least Common Multiple (LCM) for 4 14 21 is 84.
For 70, 35, 21, 14 the LCM is: 210
The LCM is: 378