In a proper order, the first four factors of 80 are

1.	In a proper order, the first four factors of 80 are
A.	1, 2, 3, 4, 5
B.	1, 2, 4, 5, 8
C.	1, 3, 5, 10, 20
D.	1, 2, 3, 5, 10
Answer» C. 1, 3, 5, 10, 20

Discussion