5. What is the greatest common factor of 12 and 18? A. 3 B. 6 C. 9 6. What is the least common multiple of 8 and 3? A. 48 B. 72 C. 24 7. Which of these fraction is in mixed form? A. 7 1/4 B. 1/5C. 9/5 s. Which of these fractions is equal to 1? A. 9/8 B. 12/12 C. 9/17