Answer:
18 is a composite number. 18 = 1 x 18, 2 x 9, or 3 x 6. Factors of 18: 1, 2, 3, 6, 9, 18.
Factors of 18: 1, 2, 3, 6, 9, 18. Factors of 19: 1, 19. Factors of 20: 1, 2, 4, 5, 10, 20.
Step-by-step explanation:
Base on my teacher said.
