2. Are these statements true (T) or false (F)? ✰ -4 is not a factor of 12... F a. 5 is a factor of 30. b. C. نن 1, 3, and 4 are the only common factors of 12 and 24. 3 is the HCF of 12 and 18. d. The HCF of 10 and 20 is 10. e. 6 is a factor of 9. f. 9 is not a factor of 99.​