Answer :
The least common factor of 6 and 12 is 1 .
The greatest common factor of 6 and 12 is 6 .
The least common multiple of 6 and 12 is 12 .
There is no greatest common multiple of 6 and 12 .
The greatest common factor of 6 and 12 is 6 .
The least common multiple of 6 and 12 is 12 .
There is no greatest common multiple of 6 and 12 .