What is the greatest common factor of 18 and 12______ The least common multiple of 6 and 12 is______ .

What is the greatest common factor of 18 and 12______ The least common multiple of 6 and 12 is______ .

18 = 3 × 3 × 212 = 2 × 2 × 3, so the greatest common factor of 18 and 12 is 2 × 3 = 6; 12 = 6 × 2, so the least common multiple of 6 and 12 is 12