4. The least common multiple of 2, 3, 4 and 5 is a. 20 b. 30 C. 50 d. 60 5. A common multiple of 3, 5, 9 and 10 is b. 50 c. 90 d. 100 a. 30 6. The GCF(greatest common factor) of 12 and 30 d. 8 C. 50 b. 10 a. 6 7. The least common multiple of 10 and 15 b. 10 a. 15 c. 30 d. 5
