252
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12 21
The Least Common Multiple (LCM) for 27 21 is 189.
The least common multiple of 7 , 9 , 21 = 63
Least common multiple of 5 6 and 21 is 210.
The LCM of 15 and 21 is 105.The Least Common Multiple (LCM) for 15 21 is 105.