12.5
The greatest common factor between twelve and eight is four. Don't get confused about greatest common factor and greatest common multiple. There is GCF and GCM, be sure to pay extra attention to the last letter or word, whichevere form it is in.
There is no "most common" multiple of two or more numbers, but there is a greatest common multiple if that's what you mean. But for multiples, the list of common ones goes on and on and on, since every single number in the universe is a multiple.
The least common multiple of 8 through 12 is 3960, so it will be impossible to satisfy your conditions.
1 if u meant the greatest common denomenater: 6 if u meant lest common multiple: 36
Twelve
Since 12 is a factor or 36, it is automatically the GCF.
Zero and twelve don't have any common multiples.
twelve and two fifth
1,2,4,7,9
The answer is 4.
2
120