12: 1,2,3,4,6,12
16: 1,2,4,8,16
common: 1,2,4
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48
well, look at the factors of 16...we have 2,4,8, and16.So if we had LCM of 8 and 16, that would be 16 an both are composite
The LCM is: 240
They are SQUARE NUMBERS.
They can be. 12 and 17 are factors of 204