هما 7. What are the factors of 18? a. 1,2,3,6,9, and 18 C. 1,2,3,4,6,7, and 18 b. 1,2,3,4,5, and 9 d. 1,2,3,4,5 and 16 II. Read each item carefully. Encircle the letter of the correct answer. 8. 1,2,4,5,8,10,20, and 40 are factors of what number? 9. What do you call a number greater than 1 which can be divided exactly by 1 and b. 10 itself? a. Composite number C. whole number a. 20 C. 40 d. 25 b. prime number d. ordinal 10. Which of the following is a set of composite numbers? b. 1,3,5,7,9 C. 2,3,4,6,7 a. 2,4,6,8,10 d. 12,14,15,11 11. What number is the product of the following prime factors 12 x1,6 x 2, 4 x 3? b. 25 d. 36 a. 24 C. 12 12. What are the common factors of 12 and 18? a. 1,2,3,and 6 b. 1,2,3,and 5 C. 1,2,3 and 7 d. 1,2,3,and 14 13. What is the GCF of 32 and 40?
