MATHEMATICS V Choose the letter of the correct answer. 1. What are the common factors of 21 and 14? D. 4 & 2 A. 1 & 7 B. 3 & 2 C. 7 & 2 2. 1,3 and 9 are common factors of what number? A. 6 & 12 B. 5 & 10 C.9 & 27 D. 14 & 20 3. Find the common factors of 18 and 36. A. 3.5.9 and 10 B. 2,3,6 and 9 C. 4,8,12 and 9 D. 2,4,9 and 12 4. 12,15 and 21 are divisible by _ A. 7 B.3 C.5 D. 2 5. Using the divisibility rules, encircle the given numbers below whose factor is 3. 29 133 784 24,786 True or False: Write True if the statement is correct and False if not. 6. The common factors of 25 and 30 are 1 and 5. 7. 920 and 440 are divisible by 3. 8. 6 and 3 are the common factors of 18. 9. 25 is divisible by 5. 10. The common factors of 21 and 30 are 1,2,5,7 and 10. P.EV​